СПОСОБ ИЗГОТОВЛЕНИЯ ПОРОШКОВ MN-ZN ФЕРРИТА ДЛЯ ПРОИЗВОДСТВА СЕРДЕЧНИКОВ ОТКЛОНЯЮЩИХ СИСТЕМ ТЕЛЕВИЗИОННЫХ ТРУБОК

Изобретение относится к технологии порошков Mn - Zn феррита, в частности для производства сердечников отклоняющих систем, и включает мокрое измельчение в кислой среде бракованных по внешнему виду и геометрии спеченных ферритовых изделий. Цель изобретения - повышение плотности изделий из этих порошков после спекания. Поставленная цель достигается тем, что в суспензию ферритового порошка после мокрого измельчения вводится триэтаноламин в количестве 0,1 - 0,3 мас.% ...

Способ получения марганец-цинковых ферритовых порошков

CHARGE FOR PRODUCING STRONTIUM HEXAFERRITE

Способ получения шихты для ферритов

Ferrit-Träger für elektrophotographischen Entwickler und Entwickler, den Träger enthaltend

FEINTEILIGE, SPHAERISCHE, ZWEISCHICHTIGE FESTSTOFFTEILCHEN

Verfahren zur Herstellung polarer und unpolarer superparamagnetischer Flüssigkeiten.

PLAETTCHENFOERMIGE EISENOXIDPIGMENTE UND VERFAHREN ZU DEREN HERSTELLUNG SOWIE DEREN VERWENDUNG

PREPARATION OF MILD FERRITES AND BARIUM TITANATES

... 1449509 Ferrites; barium titanate MONTECATINI EDISON SpA 27 Nov 1973 [30 Nov 1972] 54990/73 Addition to 1386505 Headings C1A and C1J Barium titanate and mild ferrites of formula Me(1) x Me(2) 1-x Fe3+ 2-y Me(3) y O2- 4 , where Me(1) and Me(2) are Mn2+, Co2+, Ni2+, Cu2+, Mg2+, Cd2+, Zn2+ or (¢Li++¢Fe3+), Me(3) is Al3+, Cr3+, Sc3+, Ga3+ or In3+, x is 0-1 and y is 0-2, are prepared from a slurry containing TiO 2 or ferric oxide and/or hydroxide and oxides and/or carbonates of Ba, Me(1), Me(2) and/or Me(3), by (a) drying and granulating the slurry with gases of inlet temperature 400-800‹ C., the gases being those obtained in step (b) below with or without other hot gases, to obtain granules of average particle size 150-300 microns; (c) calcining the granules at 700- 1100‹ C. for ferrites or at 1150-1200‹ C. for BaTiO 3 for 0À5-4 hr. in a fluidized bed ...

Paramagnetic polymer practice

RESISTIVE SINGLE COMPONENT DEVELOPER COMPOSITION

Process for manufacture of microbeads

Improvements in or relating to Flourescent Magnetic Particles

... 1,177,703. Uses of luminescence. MAGNAFLUX CORP. 1 Aug., 1967 [27 June, 1967], No. 35348/67. Heading C4S. [Also in Division H1] Aggregates for detecting flaws each comprise a core of adhering magnetic and fluorescent particles encapsulated in a resin. The aggregates are made by mixing magnetic and fluorescent powders to form the cores, dissolving the resin in a water-miscible volatile solvent, adding the cores to form a slurry then adding water to precipitate the resin as a coating, on the cores. Magnetic powders are Fe 2 O 3 , Fe 3 O 4 , carbonyl iron and ferrites. Fluorescent powders comprise particles of a melamine- or benzoguanamine - sulphonamide - formaldehyde resin containing a fluorescent dye, e.g. 2,2-dihydroxy 1,1-naphthalolazine together with fluoranthane to increase fluoresence. The coating resin may be a thermoplastic polyamide derived from the reaction of dimerized linoleic acid and a polyamine, e.g. ethylene diamine of molecular weight 6000-9000 and a melting point of 105 ...

PROCESS AND APPARATUS FOR PRODUCTION OF SPHERICAL GRAIN FERRITE POWDER

Mixed ferrites by a coprecipitation process

... 814,180. Magnetic compositions. STEATITE RESEARCH CORPORATION. Dec. 30, 1955 [July 1, 1955], No. 37465/55. Class 38 (2). Mixed ferrites are made by coprecipitating compounds of two or more bivalent metals, and heat treating ferric oxide mixed with the mixture of compourds or oxides derived from the compounds. Suitable proportions of zinc oxide and manganese carbonate are formed to a sluriy with water from which oxalates of the metals are precipitated by the addition of a solution of oxalic acid until the solution is slightly acidic. The water is removed, as by decanting, and the precipitate is washed, dried, mixed with Fe 2 0 3 in a ball mill and sintered in air at 1700‹ F. for two hours. Part of the Fe z 0 3 may be retained for addition to a ball milling with this product. The mixture so obtained is dried, mixed with an organic binder such as methyl cellulose, and water, moulded, and sintered in air at 2350‹ to 2400‹ F. Zinc carbonate may be used instead of zinc oxide. Other examples describe ...

STABILIZED SUPER+PARAMAGNETIC PARTICLES

MAGNETIC PARTICLE WITH A CLOSED ONE, ULTRADÜNNEN SILIKASCHICHT, PROCEDURES FOR THEIR PRODUCTION AND USE

MAGNETIC PARTICLES FOR USE IN THERAPY AND DIAGNOSTICS

PROCEDURE FOR THE PRODUCTION OF BARIUM TITANATE

CONTINUOUS PROCEDURE FOR THE PRODUCTION OF FERRITES

MAGNETIC CARRIER POWDER.

CONTINUOUS PROCEDURE FOR THE PRODUCTION OF FERRITES

SUPER+PARAMAGNETIC PARTICLES WITH INCREASED R 1-RELAXIVITÄT, PROCEDURE FOR the PRODUCTION AND THEIR USE

Water soluble metal and semiconductor nanoparticle complexes

PROCESS FOR PRODUCING FERROMAGNETIC FINE-PARTICLE EXOTHERMIC ELEMENT

MAGNETIC CARRIER POWDER

Multi-layer transformer having electrical connection in a magnetic core

PRODUCTION OF FINELY DIVIDED SOLID MATERIALS

FERRITE POWDER MAGNETIC TONER CONTAINING RESIN AND OXIDE OF METAL INCLUDING MANGANESE, NICKEL, COBALT, MAGNESIUM, COPPER OR ZINC

A ferrite powder type magnetic toner for use in electrophotography comprises a one-component ferrite powder type magnetic toner for use in electrophotography comprising toner particles having an average particle diameter of 5 to 40.mu., wherein each of said toner particles comprises a resinous component suitable for electrophotographic development and ferrite powder particles therein, the particles of the ferrite powder having an average particle diameter of 0.2 to 0.8.mu., the ferrite having a spinel structure comprising stoichiometric components of iron oxide at a ratio of 99.9 to 51 mole % as Fe203 and at least one metal oxide selected from the group consisting of manganese oxide, nickel oxide, cobalt oxide, magnesium oxide, copper oxide, zinc oxide and cadmium oxide at a ratio of 0.1 to 49 mole % as MO wherein M represents Mn, Ni, Co, Mg, Cu, Zn or Cd, and wherein said ferrite powder is incorporated at a ratio of 0.2 to 0.7 wt. parts to 1 wt. part of said resinous component in said ...

FERRIMAGNETIC SPINEL FIBERS

This invention provides a process for the preparation of ferrimagnetic spinel fibers composed of crystallites corresponding to the formula: MlFe2O4 where M is a divalent metal such as manganese iron, cobalt, nickel, copper, zinc, cadmium, magnesium, barium, strontium, or any combination thereof.

METHOD OF MAKING A POLYCRYSTALLINE MN CONTAINING FERRITE BODY

PRODUCTION OF FERRIMAGNETIC SPINEL FIBERS

MAGNETIC DERMAL ADHESIVES, ACCESSORIES, AND RELATED METHODS

Various magnetic dermal adhesives and magnetically attachable personalizable accessories of the present disclosure are provided comprising a load-bearing magnetic dermal adhesive incorporating magnetic particles and a magnetic personalizable accessory incorporating one or more magnetic elements exhibiting high magnetic coercivity and positioned at least at the base of the magnetic personalizable accessory enabling their interaction. These magnetically complementary products provide a convenient way for reversibly attaching/detaching/ interchanging various magnetic personalizable accessories to interact with consumers' skin so that they can be (a) "re-useable" saving money, time, and resources; (b) can be arranged in various ways (worn singly or grouped together in an infinite number of unique arrangements); (c) can provide a broad range of options for creative self-expression/personal style; (d) can be interchangeably attached to achieve multiple variations; (e) can be conveniently swapped ...

FERRITE POWDER MAGNETIC TONER CONTAINING RESIN AND OXIDE OF METAL INCLUDING MANGANESE, NICKEL, COBALT, MAGNESIUM, COPPER OR ZINC

PROCESS FOR PRODUCTION OF SURFACE-COATED INORGANIC PARTICLES

Nano-sized inorganic particles having uniform particle sizes and precisely controlled particle diameters have already been produced by synthesis in an organic solvent, but these nano-sized inorganic particles are hindered from dispersing in a polar solvent because of the adsorption of a long-chain fatty acid on the surfaces of the particles. Further, it was difficult to form nano-sized inorganic particles dispersible in a polar solvent by replacing the long-chain fatty acid coats. According to the invention, various surface-coated inorganic particles dispersible in polar solvents can be produced from fatty acid-coated inorganic particles by adding a temporary coating substance such as thiomalic acid to a nonpolar solvent containing fatty acid-coated inorganic particles dispersed therein to replace the fatty acid coats by the temporary coating substance, dispersing the inorganic particles coated with the temporary coating substance in a polar solvent, and then adding a coating substance ...

Coil core, especially for high-power inductors

PROCEDURE FOR ROUND MELTS OF MAGNETICALLY SWITCHES FERRITES.

NiCuZn ferrite material as well as preparation method and application thereof

Magnetic material for light emitting diode (LED) illumination control circuit

The invention discloses a magnetic material for a light emitting diode (LED) illumination control circuit, and is characterized in that: the magnetic material is MnZn ferrite, which comprises the following main components: 59.5 to 61.8 mol percent of Fe2O3, 9 to 12 mol percent of ZnO and the balance of MnO, and following auxiliary components (based on the total content of the main components): 0.01 to 0.15 weight percent of KCO3, 0.008 to 0.10 weight percent of Y2O3, 0.01 to 0.25 weight percent of CaO, 0.005 to 0.055 weight percent of SiO2, 0.005 to 0.50 weight percent of MgO, 0.005 to 0.06 weight percent of V2O5, 0.01 to 0.50 weight percent of CoO, 0.005 to 0.08 weight percent of Nb2O5 and 0.005 to 0.055 weight percent of ZrO2. The magnetic material is characterized in that: the magneticconductivity at the temperature of 25 DEG C is 1,500+/-25 percent; the saturated magnetic flux density at the temperature of 100 DEG C is more than 500mT; and the power consumption at the temperatureof ...

Surface-mounted inductor

Low-electric-field dielectric-adjustable titanium-doped barium ferrite material and production method thereof

离子交换树脂法制备超薄片状M-型钡铁氧体微粒

The ion exchange resin process for preparing superthin M-type barium ferrite particle uses ferrous chloride or ferrous sulfate, barium halide and H+ type ion exchange resin as material, with the material having Ba/Fe ratio of 1 to 11.5-12; and includes exchanging Ba ion and ferrous ion onto ion exchange resin, and repeated washing the resin to eliminate excessive physically adsorbed ion, high temperature roasting of exchanged resin at 700-1100 deg.c for 1-10 hr. The barium ferrite particle prepared in the method of the present invention has saturated magnetization intensity up to 71 sq Am/kg near the theoretic value and moderate coercive force.

Preparation method of magnetic Fe3O4@SiO2-NH2 nanoparticles

The invention relates to a preparation method of magnetic Fe3O4@SiO2-NH2 nanoparticles. The preparation method of the magnetic Fe3O4@SiO2-NH2 nanoparticles comprises the step of synthesizing of magnetic Fe3O4 nanoparticles, magnetic Fe3O4@SiO2 nanoparticles and the magnetic Fe3O4@SiO2-NH2 nanoparticles, wherein the magnetic Fe3O4 nanoparticles are spherical, even in particle size and good in dispersibility, the particle sizes of the magnetic Fe3O4 nanoparticles are 5-10 nm, and the heat stability is good. The magnetic Fe3O4@SiO2-NH2 nanoparticles are good in crystal structure, have unique magnetic property and can be used in various biotechnological fields such as magnetofluid, contrast agents, immunodetection, cell separation, biosensors, separation and purification of protein and nucleic acid, diagnostic reagents and enzyme immobilization.

High saturation magnetic flux high transmission capacity is high DC superimposed soft magnetic material and its preparation method

Ferrite particles, resin composition, and resin film

A high-frequency high-impedance in the manganese-zinc ferrite material and its preparation process

Carboxylic acid type magnetic nanoparticles prepared by PEG regulation and control and application thereof

Oxidation of a wrapped HPEI ferromagnetic nano-particle preparing method

A nickel ferrite magnetic nano composite material preparation method

Method of preparation, by coprecipitation, of mixed ferrites

Method of preparation of ferrites

PROCEDE DE PREPARATION DE PRODUITS CERAMIQUES

PROCEDE DE PREPARATION DE PRODUITS CERAMIQUES. LA SEQUENCE DE TRAITEMENT INCLUANT UN STADE DE FRITTAGE EST FACILITEE PAR L'ADDITION D'UNE MATIERE AYANT UN POINT DE FUSION RELATIVEMENT BAS ET UNE COMPOSITION A PEU PRES EUTECTIQUE ET CONSISTANT EN DEUX OU PLUSIEURS CONSTITUANTS DE LA CERAMIQUE FINALE. LA MATIERE AJOUTEE SERT DE FLUX ET PERMET D'EFFECTUER LE FRITTAGE A UNE TEMPERATURE PLUS BASSE. PREPARATION DE FERRITES.

Device for the production of ceramic mouldings, and more especially of magnetized ferrite mouldings

Ferrite Material

PROCEDE ET DISPOSITIF POUR LA FABRICATION DE PIECES EN CERAMIQUE

Meth od for manufacturing ferrite powder with coated phosphate method for manufacturing

PREPARATION METHOD OF FERROFERRIC OXIDE MAGNETIC NANOSPHERES

A preparation method of ferroferric oxide magnetic nanospheres is provided, comprising the following steps, 1) preparing trivalent iron salt mixed system, wherein a soluble trivalent iron salt is dissolved in glycol under ambient temperature, further urea and polyglycol are added and mixed uniformly to obtain the trivalent iron salt mixed system; the mass ratio of glycol to the trivalent iron salt is 15:1～60:1, glycol to urea is 20:1～100:1, and glycol to polyglycol is 20:1～100:1; 2) reacting, wherein the trivalent iron salt mixed system is transferred into a reaction kettle, then the reaction kettle is sealed and placed into a heating device, and it is reacted at 200-300°C for 8 to 72 hours; 3) washing, wherein after the reaction system is cooled down to ambient temperature, the product is taken out, washed with anhydrous ethanol and water in turn to obtain the ferroferric oxide magnetic nanospheres. The soluble iron salt includes ferric chloride, ferric sulfate, ferric acetate, and ferric ...

Ferrite carrier for electrophotographic developer and developer using said carrier

This invention provides a ferrite carrier for an electrophotographic developer characterized in that a core material is ferrite particle composed of 17.0 to 29.0 mol % of Li2 O and 71.0 to 83.0 mol % of Fe2 O3, exhibits a resistance of 2.5×108 to 2.5×109 Ω when a voltage of 250 V is applied, satisfies the relationship: a1 -a2 ≦1.5 when the resistance (R1) of the ferrite particle exhibited when a voltage of 250 V is applied thereto is taken as a1 ×10b Ω and the resistance (R2) thereof exhibited when a voltage of 1000 V is applied thereto is taken as a2 ×10b Ω (with the proviso that 1.0≦a1 <10, 0.1≦a2, and b is an integer of 6 to 9), and the carrier prepared by coating the ferrite particle with a resin exhibits a resistance of 1.0×109 to 1.0×1015 Ω when a voltage 250 V is applied thereto, and has a true specific gravity of 4.70 or below.

Electromagnetic shielding

Electromagnetic shielding material is formed from a shielding composition made with magnetic particles and a binder, where the magnetic particles have an average diameter less than about 1000 nm and are substantially crystalline. The magnetic particles can be formed from Fe2 O3, Fe3 O4, Fe3 C, or Fe7 C3. The shielding composition can be formed into a layer or into composite particles. The binder can be a metal or an electrically conducting polymer. A conducting layer can be placed adjacent to the shielding composition. The shielding material can be used to protect sensitive electronic devices. Methods are described for forming iron oxide particles by laser pyrolysis.

Continuous process for making nanoscale amorphous magnetic metals

Sononochemistry permits extremely rapid cooling to produce nanoscale particles. If magnetic, these particles are valuable for magnetic recording media, manufacture of permanent magnets, and other uses. In the present invention, we sonicate neat metal carbonyl to produce particles which we separate, generally magnetically, from the metal carbonyl, thereby making the production process as simple as possible and continuous.

Ferromagnetic powder for low core loss parts

A ferromagnetic powder comprising ferromagnetic particles coated with a material that does not degrade at temperatures above 150° C. and permits adjacent particles to strongly bind together after compaction such that parts made from the ferromagnetic powder have a transverse rupture strength of about 8,000 to about 20,000 pounds/square inch before sintering. The coating includes from 2 to 4 parts of an oxide and one part of a chromate, molybdate, oxalate, phosphate, or tungstate. The coating may be substantially free of organic materials. The invention also includes a method of making the ferromagnetic powder, a method of making soft magnetic parts from the ferromagnetic powder, and soft magnetic parts made from the ferromagnetic powder.

Single-step simple and economical process for the preparation of nanosized acicular magnetic iron oxide particles of maghemite phase

The present invention relates to a single-step simple and economical process for the preparation of nanosized acicular magnetic iron oxide particles of maghemite phase of size ranging between 300-350 nm in magnetic field at room temperature by biomimetic route, and a method of obtaining a magnetic memory storage device using the said particles.

HIGHLY DISPERSE MAGNETIC METAL OXIDE PARTICLES, PROCESSES FOR THEIR PREPARATION AND THEIR USE

PRODUCTION OF FINE FERRITE PARTICLE

PURPOSE: To heighten the sintering density without impairing the magnetic property by a heat treatment of fine particle formed through the mixing and hydrolysis of Li and Fe compounds of metal alkoxide in the production of cubic spinel ferrite. CONSTITUTION: Li and Fe compounds of a metal alkoxide as shown by M(OR)n (M represents a metal of 1W5 valent and R alkyl group) are mixed and undergoes a hydrolysis to form a cubic spinel ferrite with a grain size of less than 0.1μm. The particle thus obtained is reduced to a fine particle with a grain size of less than 0.1μm through a heat treatment below 800°C. COPYRIGHT: (C)1980,JPO&Japio ...

HEXAGONAL FLAKE FORM IRON OXIDE PARTICLE

FERRITE PASTE AND MANUFACTURE THEREOF

PURPOSE: To achieve a sintering density of 90% or higher at a temperature of 900°C or below and prevent cracks from occurring in drying after printing by limiting the weight ratio of ferrite grains different in average grain size to a specified range. CONSTITUTION: A ferrite paste is composed of a mixture of a ferrite grain with an average size of 1-30μm (A) and that with an average size of 5-50μm (B) with the weight ratio of A:B limited to the range of 95:5-20:80. A 0.1-4.0M alcohol solution with dissolved nitrates of the component metals is conditioned by heating and circulating to obtain a ferrite sol. Oxides or carbonates of the component metals are conditioned by repeating mixing, calcinating and grinding cycles to obtain a ferrite powder. The ferrite powder is mixed into the ferrite sol, and the resultant mixture is condensed until the ferrite content falls in the range of 40-90wt% to obtain the ferrite paste. The simple method for ferrite paste manufacture provides evenly mixed ferrite ...

CARRIER

PROBLEM TO BE SOLVED: To eliminate failure of a device caused by change of picture quality to change of development bias and bias leak by forming a conductive film on an insulating film formed on a surface of magnetic particle and adjusting electrical resistance as desired. SOLUTION: An insulating film 2 is applied to a surface of magnetic particle 1. The film 2 is formed of resin such as styrene, acryl, epoxy, polyester and phenol. A conductive film 3 is further applied to a surface of the insulating film 2. The conductive film 3 is formed by mixing carbon black, metallic powder and magnetite powder to resin. The magnetic particle 1 is particle which has magnetism such as magnetite powder. Thereby, the device can be used in a copying machine in which a general development method is employed. COPYRIGHT: (C)1998,JPO ...

MAGNETIC CARRIER PARTICLE

PURPOSE: To provide magnetic carrier particles having remarkably widened range of resistivity adjustable by the change in the atmosphere of calcination, by using a ferrite having a specific composition in terms of bivalent or trivalent metal oxide. CONSTITUTION: A ferrite having the composition of formula in terms of bivalent or trivalent metal oxide, is used as the objective magnetic carrier. In the formula, M is Ni or a combination of Ni with Zn, Mg, Mn, Cu and/or Co, provided that when M is a combination of Ni and one or more other elements, the atomic ratio of Ni in M is ≥0.05. X is ≥54mol%. The resistivity of the ferrite particle can be adjusted freely within the range of 104W1014ohm (especially 105W 1012ohm) (measured by applying 100V) by changing the conditions of calcination. COPYRIGHT: (C)1983,JPO&Japio ...

Способ получения марганцевых ферритов с прямоугольной петлей гистерезиса

Paste i.e. electro-rheological polishing paste, for use in e.g. controllable rotary damper, has solid particles wetted by isolation liquid and/or slip agent and surrounded by plastic and/or structure-viscous material

The paste has partly agglomerated, partial polarizable and/or magnetizable solid particles partially wetted and/or coated by an insulator, isolation liquid and/or slip agent, where the solid particles are water-free and partially non-abrasive. The solid particles are surrounded by a plastic and/or structure-viscous material, where degree of agglomeration of the solid particles is arbitrarily adjusted, and slide-retarding of the paste is adjusted by elasticity of the solid particles and/or by additive of hard or yield particles. The isolation liquid is selected from polydimethylsiloxane, synthetic oil and siloxanes fluorine-containing liquid.

ELEKTROSTATOGRAPHISCHE FERRITTRAEGER

IMPROVEMENTS IN OR RELATING TO THE PREPARATION OF FERRITES OF LANTHANIDES

... 1284496 Ferrites, aluminates and galliates of lanthanide elements COMPAGNIE FRANCAISE DE RAFFINAGE 20 March 1970 [21 March 1969] 13502/70 Heading C1A [Also in Division H1] A ferrite, or solid solution of a ferrite of a lanthanide including yttrium is prepared by subjecting mixed citrates of at least one lanthanide element and at least one other trivalent element selected from Fe, Al or Ga to pyrolysis. Ferrite is defined in the Specification as (1) compounds having the general formula LnFeO 3 crystallizing in the perovskite system and existing for all lanthanides including yttrium; (2) compounds having the general formula Ln 3 Fe 5 O 12 crystallizing in the garnet system and which exist for the series of lanthanides from Sm to Lu and also for Y; (3) compounds of class (1) or (2) in which all or part of the Fe has been substituted with Al or Ga. A solid solution of a ferrite is defined as a solid solution of the mixed oxides defined in (1), (2) or (3) above in which a lanthanide element ...

MAGNETIC TONERS

HIGH-DISPERSED MAGNETIC METALLIC OXIDE PARTICLES, PRODUCTION PROCEDURES AND APPLICATION

SUPER+PARAMAGNETIC PARTICLES, PROCEDURES FOR ITS PRODUCTION AND USE THE SAME

KONTINUIERLICHES VERFAHREN ZUR HERSTELLUNG VON FERRITEN

VERFAHREN ZUR HERSTELLUNG VON BARIUMTITANAT

SILICON IRON MIXTURE OXIDE POWDER

PROCEDURE FOR THE PRODUCTION OF MAGNETITE PARTICLES

MAGNETIC POWDER FOR TWO-COMPONENT TONERS.

MAGNETIC TONERS

ISOSTATIC HOT-PRESSING PROCESS FOR MANUFACTURING DENSE SINTERED ARTICLES

PRODUCTION OF FERRIMAGNETIC SPINEL FIBERS

This invention provides a spinning process for the preparation of ferrimagnetic spinel fibers composed of crystallites corresponding to the formula: M1Fe2O4 where M is manganese, iron, cobalt, nickel, copper, zinc, cadmium, magnesium, barium, strontium, or any combination thereof.

MAGNETIC PARTICLES WITH A GLASS SURFACE AND THEIR USE

Magnetic particles with an outer glass surface being essentially poreless or having pores of a diameter of less then 10 nm as well as ferromagnetic particles wi th a glass surface are preferentially useful for the isolation of biological material from samples. They provide a quick and reliable purification.

Iron oxide based anti-electromagnetic interference magnet material and preparation method

Inductance ferrite magnetic core for switching mode power supply transformer and preparing method of magnetic core

Thin-filmed compound broadband anti-electromagnetic interference magnetic powder and preparation method thereof

The invention relates to thin-filmed compound broadband anti-electromagnetic interference magnetic powder and a preparation method thereof. The platy magnetic powder as a whole of the invention adopts a core-shell structure and the platy core is evenly covered with the shell. The material of the core is soft magnetic metal and selected from one out of Co, Fe, Ni, Fe-Si-Al alloy, and the material of the shell is one out of MnZn ferrite, NiZn ferrite, MgZn ferrite and NiCuZn ferrite. The preparation method comprises the following steps: preparing a first reaction solution containing FeCl<2> and MeCl<2>, a second reaction solution containing KOH and a mixed solution containing matrix powder, wherein, Me is the material of the shell and the matrix powder is the material of the core; adding the first reaction solution and the second reaction solution to the mixed solution at constant speed to form a magnetic powder solution; and filtering, washing and drying the magnetic powder solution to obtain ...

Preparation method of manganese zinc ferrite with high magnetic conductivity

Manganese-zinc ferrite and preparation method thereof

The magnetic core element, the core module and a magnetic core is used module of the induction type structure element

Stoichiometric ferrite carriers

Method of preparation of fine ferrite particles of the spinel type to aptitude raised for dispersion and new products thus obtained

Magnetic grain boundary engineered ferrite core materials

A composite material can include a grain component and a nanostructured grain boundary component. The nanostructured grain boundary component can be insulating and magnetic, so as to provide greater continuity of magnetization of the composite material. The grain component can have an average grain size of about 0.5-50 micrometers. The grain boundary component can have an average grain size of about 1-100 nanometers. The nanostructured magnetic grain boundary material has a magnetic flux density of at least about 250 mT. The grain component can comprise MnZn ferrite particles. The nanostructured grain boundary component can comprise NiZn ferrite nanoparticles. Core components and systems thereof can be manufactured from the composite material.

Simulation apparatus and simulation method

A computer-readable medium stores a magnetic substrate simulation program causing a computer to execute a process that includes calculating an effective magnetic field for each area of an element in the magnetic substrate, when magnetization of each area changes and based on a magnetic field generated from magnetic energy in each area and a rate of change of magnetization working in a direction inhibiting change in the average magnetization of the areas; obtaining for each area and based on the calculated effective magnetic fields and magnetization of each area, changes in magnetization and calculating for each area, magnetization after the changes; judging based on magnetization of each area before and after the changes, whether magnetization in the element converges; and storing a combination of the average magnetization of the areas for which magnetization in the given element converges and a static magnetic field based on the average magnetization.

COIL COMPONENT

A coil component includes a nonmagnetic body having a cured product of a polymer resin, an insulating substrate embedded in the body and having a thickness of 30 μm or less, a coil portion including first and second coil patterns respectively disposed on first and second opposing surfaces of the insulating substrate, and first and second external electrodes disposed on a surface of the body to be connected to each of the first and second coil patterns exposed to the surface of the body. 1. A coil component comprising:a nonmagnetic body including a cured product of a polymer resin;an insulating substrate embedded in the body and having a thickness of 30 μm or less;a coil portion including first and second coil patterns respectively disposed on first and second opposing surfaces of the insulating substrate; andfirst and second external electrodes disposed on a surface of the body to be respectively connected to the first and second coil patterns.2. The coil component of claim 1 , wherein the body further comprises nonmagnetic powder dispersed in the cured product of the polymer resin.3. The coil component of claim 2 , wherein a volume of the nonmagnetic powder with respect to a total volume of the cured product of the polymer resin is 50 vol % or more.4. The coil component of claim 2 , wherein the nonmagnetic powder is in contact with each of the first and second coil patterns.5. The coil component of claim 2 , wherein the nonmagnetic powder comprises at least one of an organic filler and an inorganic filler.6. The coil component of claim 5 , wherein the organic filler comprises at least one of Acrylonitrile-Butadiene-Styrene (ABS) claim 5 , Cellulose acetate claim 5 , Nylon claim 5 , Polymethyl methacrylate (PMMA) claim 5 , Polymethyl methacrylate claim 5 , Polybenzimidazole claim 5 , Polycarbonate claim 5 , Polyether sulfone claim 5 , Polyetherether ketone (PEEK) claim 5 , Polyetherimide (PEI) claim 5 , Polyethylene claim 5 , Polylactic acid claim 5 , ...

INCREASED RESONANT FREQUENCY ALKALI-DOPED Y-PHASE HEXAGONAL FERRITES

Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material, such as Y-phase hexagonal ferrite material, and methods of manufacturing. In some embodiments, sodium or potassium can be added into the crystal structure of the hexagonal ferrite material in order to achieve improved resonant frequencies in the range of 500 MHz to 1 GHz useful for radiofrequency applications. 1. (canceled)2. A method for increasing the resonant frequency of a hexagonal ferrite material , the method comprising:providing a Y phase hexagonal ferrite material having a strontium site and a crystal structure of an intergrowth between a magnetoplumbite and a spinel crystal structure;doping the Y phase hexagonal ferrite material with sodium, potassium, or other univalent alkali metal on the strontium site; anddoping the Y phase hexagonal ferrite material with scandium or indium for charge compensating with the sodium, potassium, or other univalent alkali metal to form a doped Y phase hexagonal ferrite material.3. The method of claim 2 , wherein the Y phase hexagonal ferrite material includes Sr claim 2 , a metal claim 2 , Fe claim 2 , and O.4. The method of claim 3 , wherein the metal is Co.5. The method of claim 3 , wherein aluminum is added into the crystal structure of the Y phase hexagonal ferrite material to replace the Fe.6. The method of claim 5 , wherein the doped Y phase hexagonal ferrite material has a composition SrCoFeAlOor Sr(K claim 5 ,Na)CoMFeAlO claim 5 , M being the scandium or the indium.7. The method of claim 6 , wherein the doped Y phase hexagonal ferrite material has the composition SrNaCoScFeAlOor SrNaCoScFeAlO.8. The method of claim 2 , wherein the indium or the scandium are located on a cobalt site of the Y phase hexagonal ferrite material.9. The method of claim 2 , further including adding silica into the crystal structure of the Y phase hexagonal ferrite material.10. The method of claim 2 , further including adding silicon into the ...

COIL COMPONENT

A coil component includes a body, a coil disposed inside of the body and forming one coil track when being viewed in a laminated direction, external electrodes disposed on an outer surface of the body. The coil track includes corner portions and linear portions connecting the respective corner portions to each other, and a line width of the corner portion is greater than that of the linear portion. 1. A coil component comprising:a body;a coil disposed inside of the body and forming a coil track;external electrodes disposed on an outer surface of the body,wherein the coil track includes corner portions and linear portions connecting the respective corner portions to each other, anda line width of the corner portion is greater than that of the linear portion.2. The coil component of claim 1 , wherein the line width of the corner portion is 30% to 40% greater than that of the linear portion.3. The coil component of claim 1 , wherein the corner portion includes a first corner portion that outwardly protrudes from the coil track claim 1 , and a second corner portion that inwardly protrudes from the coil track.4. The coil component of claim 1 , further comprising lead portions disposed outside of the coil track and connecting the external electrodes to an end portion of the coil.5. The coil component of claim 4 , wherein the corner portion includes a first corner portion that outwardly protrudes from the coil track claim 4 , and a second corner portion that inwardly protrudes from the coil track claim 4 , andthe second corner portion is disposed at a position corresponding to an end portion of the lead portion.6. The coil component of claim 1 , wherein the corner portion includes a first corner portion that outwardly protrudes from the coil track claim 1 , and a second corner portion that inwardly protrudes from the coil track claim 1 , andthe first corner portion has an inside formed at an acute angle formed by two adjacent linear portions.7. The coil component of claim ...

CIRCUIT BREAKER

The application relates to a power switch for breaking an electrical circuit when current and/or current time span threshold values are exceeded, including an energy converter, which on the primary side is connected to the electrical circuit, and on the secondary side provides an energy supply for at least one control unit of the power switch. A choke is connected between the secondary-side output of the energy converter and the control unit of the power switch. 1. A circuit breaker for interrupting an electrical circuit in an event of at least one of current and current-time period limit values being exceeded , comprising:an energy converter, a primary side of the energy converter being connected to the electrical circuit and a secondary side of the energy converter being configured to provide an energy supply for at least one control unit of the circuit breaker; andan inductor, connected between a secondary-side output of the energy converter and the at least one control unit of the circuit breaker.2. The circuit breaker of claim 1 , wherein a conductor of the electrical circuit forms the primary side of the energy converter.3. The circuit breaker of claim 1 , wherein the inductor is arranged at a first spatial distance from the energy converter.4. The circuit breaker of claim 1 , wherein the inductor is arranged horizontally with respect to a primary conductor.5. The circuit breaker of claim 1 , wherein the inductor includes a magnetic powder core.6. The circuit breaker of claim 5 , wherein the magnetic powder core is closed.7. The circuit breaker of claim 5 , wherein the magnetic powder core comprises Fe claim 5 , Fe/Ni alloys or ferrite.8. The circuit breaker of claim 5 , wherein the magnetic powder core is a toroidal core claim 5 , a U-shaped half-core or E-shaped half-core implemented twice or with a terminating I-shaped connecting core.9. The circuit breaker of claim 1 , wherein the inductor includes a magnetic core composed of a high-permeability material. ...

MAGNETODIELECTRIC Y-PHASE STRONTIUM HEXAGONAL FERRITE MATERIALS FORMED BY SODIUM SUBSTITUTION

Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material and methods of manufacturing. The hexagonal ferrite material can be Y-phase strontium hexagonal ferrite material. In some embodiments, sodium can be added into the crystal structure of the hexagonal ferrite material in order to achieve high resonance frequencies while maintaining high permeability. 1. (canceled)2. A modified sodium substituted strontium hexagonal ferrite comprising:a Y-phase strontium hexagonal ferrite crystal structure including elements strontium, sodium, cobalt, iron, oxygen and one of a tetravalent ion and a trivalent ion, the at least one of the tetravalent ion and the trivalent ion configured to charge balance for the sodium substituting at least partially for the strontium in the crystal structure; anda permeability of between 5 and 6.3. The modified sodium substituted strontium hexagonal ferrite of wherein the crystal structure contains the trivalent ion.4. The modified sodium substituted strontium hexagonal ferrite of wherein greater than zero and less than or equal to 1.5 of the trivalent ion is included in the crystal structure.5. The modified sodium substituted strontium hexagonal ferrite of wherein the trivalent ion is selected from the group consisting of Al claim 3 , Ga claim 3 , Sc claim 3 , Cr claim 3 , Mn claim 3 , In claim 3 , Yb claim 3 , Er claim 3 , Y and lanthanide elements.6. The modified sodium substituted strontium hexagonal ferrite of wherein the trivalent ion is scandium.7. The modified sodium substituted strontium hexagonal ferrite of wherein the crystal structure contains the tetravalent ion.8. The modified sodium substituted strontium hexagonal ferrite of wherein greater than zero and less than or equal to 0.75 of the tetravalent ion is included in the crystal structure.9. The modified sodium substituted strontium hexagonal ferrite of wherein the tetravalent ion is selected from the group consisting of Si claim 7 , Ge claim 7 ...

MAGNETIC CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND DEVELOPER

Provided are a magnetic core material for electrophotographic developer and a carrier for electrophotographic developer, which are excellent in charging characteristics and strength with low specific gravity and with which a satisfactory image free of defects can be obtained, and a developer containing the carrier. 1. A magnetic core material for electrophotographic developer , having a sulfur component content of from 60 to 800 ppm in terms of a sulfate ion and a pore volume of from 30 to 100 mm/g.2. The magnetic core material for electrophotographic developer according to claim 1 , wherein the magnetic core material has a ferrite composition comprising Fe claim 1 , Mn claim 1 , Mg claim 1 , and Sr.3. The magnetic core material for electrophotographic developer according to claim 1 , wherein the sulfur component content is from 80 to 700 ppm in terms of a sulfate ion.4. The magnetic core material for electrophotographic developer according to claim 1 , wherein the pore volume of from 35 to 90 mm/g.5. A carrier for electrophotographic developer comprising the magnetic core material for electrophotographic developer as described in and a coating layer comprising a resin provided on a surface of the magnetic core material.6. The carrier for electrophotographic developer according to claim 5 , further comprising a resin filled in pores of the magnetic core material.7. A developer comprising the carrier as described in and a toner. The present invention relates to a magnetic core material for electrophotographic developer, a carrier for electrophotographic developer, and a developer.The electrophotographic development method is a method in which toner particles in a developer are made to adhere to electrostatic latent images formed on a photoreceptor to develop the images. The developer used in this method is classified into a two-component developer composed of a toner particle and a carrier particle, and a one-component developer using only a toner particle.As a ...

COMPOSITE MAGNETIC MATERIAL, COIL COMPONENT USING SAME, AND COMPOSITE MAGNETIC MATERIAL MANUFACTURING METHOD

A composite magnetic material includes first particles made of soft magnetic metal and second particles provided between first particles. Each of the second particles includes a first solid phase and a second solid phase. The composite magnetic material exhibits high magnetic characteristics. 1. A composite magnetic material comprising:a plurality of first particles made of soft magnetic metal; anda plurality of second particles provided between the plurality of first particles,wherein, each of the plurality of second particles includes a first solid phase and a second solid phase.2. The composite magnetic material of claim 1 , wherein the first solid phase is made of oxide.3. The composite magnetic material of claim 2 , wherein the oxide contains at least one of Al claim 2 , Cr claim 2 , Ti claim 2 , Mg claim 2 , Si claim 2 , and Ca.4. The composite magnetic material of claim 1 , wherein the second solid phase is made of metal.5. The composite magnetic material of claim 4 , wherein the metal is one of Fe claim 4 , Co claim 4 , Ni claim 4 , Fe—Si based alloy claim 4 , Fe—Si—Al based alloy claim 4 , Fe—Si—Cr based alloy claim 4 , and Fe—Ni based alloy.6. The composite magnetic material of claim 1 , further comprising a plurality of third particles made of insulating material disposed between the plurality of second particles.7. The composite magnetic material of claim 6 , wherein the insulating material is spinel-type ferrite.8. The composite magnetic material of claim 6 , wherein a number of the plurality of third particles per unit volume of the composite magnetic material increases as being distanced away from the plurality of first particles.9. The composite magnetic material of claim 1 , wherein a plurality of voids is provided between the plurality of first particles and the plurality of second particles.10. The composite magnetic material of claim 9 , wherein the plurality of voids communicates with each other.11. The composite magnetic material of claim 1 , ...

Nickel ferrite nanoparticle composite and method for preparing same

The present invention relates to a method for preparing a nickel ferrite nanoparticle composite having an inverse spinel structure obtained using a polyol process, a nickel ferrite nanoparticle composite prepared by the method, and a method for selectively binding, separating or purifying a specific protein using the nickel ferrite nanoparticle composite. The method for preparing a magnetic nanoparticle composite according to the present invention includes a one-step hydrothermal synthesis process, and thereby the magnetic nanoparticle composite can be prepared in a simple and economic manner. Also, the nickel ferrite nanoparticles synthesized by the method of the present invention can be strongly magnetic, and also exist in the form of Ni 2+ in which Ni binds to a specific protein, thereby preventing loss of separability caused by additional oxidation and repeated recycling of the nanoparticles.

SYSTEM IN PACKAGE DEVICE INCLUDING INDUCTOR

Described examples include a system in package (SIP) device, including: a first leadframe having a first surface and a second surface opposite the first surface; an integrated circuit die including solder bumps on a first surface and having a second opposite surface, the solder bumps mounted to the second surface of the first leadframe; a second leadframe having a first surface including a die pad portion, and a second opposite surface, the die pad portion attached to the second surface of the integrated circuit die; and an inductor mounted to the first surface of the first leadframe, the inductor having terminals with exterior portions electrically connected and mechanically connected to the first surface of the first leadframe, the inductor terminals spaced from one another by a portion of an inductor body, the portion of the inductor body between the inductor terminals spaced from the first surface of the first leadframe by a gap of at least 100 μms. 1. A method , comprising:receiving a first leadframe having a first surface and an opposing second surface, the second surface having pads, the second surface of the first leadframe being oriented in a first direction;receiving a solder bumped integrated circuit die and disposing solder bumps on a first surface of the solder bumped integrated circuit die on the pads on the second surface of the first leadframe, the solder bumped integrated circuit die having a second surface opposite the first surface of the solder bumped integrated circuit die;forming solder connections between the solder bumps and pads of the first leadframe;receiving a second leadframe having a die pad portion on first surface for receiving the second surface of the solder bumped integrated circuit die, and having a second surface opposite the first surface;assembling the second leadframe, the solder bumped integrated circuit die, and the first leadframe, by attaching the die pad portion of the second leadframe to the second surface of the solder ...

INCREASED RESONANT FREQUENCY ALKALI-DOPED Y-PHASE HEXAGONAL FERRITES

Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material, such as Y-phase hexagonal ferrite material, and methods of manufacturing. In some embodiments, sodium or potassium can be added into the crystal structure of the hexagonal ferrite material in order to achieve improved resonant frequencies in the range of 500 MHz to 1 GHz useful for radiofrequency applications. 1. A method for increasing the resonant frequency of a hexagonal ferrite material , the method comprising:{'sub': 2', '2', '12', '22, 'providing a Y phase hexagonal ferrite material having the composition SrCoFeO; and'}doping the hexagonal ferrite with Na, K or other univalent alkali metal on an Sr site and charge compensating with scandium or indium on a cobalt site.2. The method of wherein the hexagonal ferrite material is doped with silicon claim 1 , aluminum claim 1 , manganese claim 1 , or any combination of the three.3. The method of wherein the hexagonal ferrite is doped with silicon acting as a grain growth inhibitor.4. The method of wherein the hexagonal ferrite is doped with manganese claim 1 , preventing reduction of the iron in the composition to Fe.5. The method of wherein scandium is used for charge compensating.6. The method of wherein indium is used for charge compensating.7. The method of wherein the hexagonal ferrite has a loss factor of less than about 6 at a frequency of 1 GHz.8. A hexagonal ferrite material having enhanced resonant frequency comprising:{'sub': 2', '2', '12', '22, 'a Y phase hexagonal ferrite material having the composition SrCoFeO, the material being doped with Na, K or other univalent alkali metal on an Sr site and including scandium or indium on a cobalt site.'}9. The hexagonal ferrite material of wherein the hexagonal ferrite material is doped with silicon claim 8 , aluminum claim 8 , manganese claim 8 , or any combination of the three.10. The hexagonal ferrite material of wherein the hexagonal ferrite is doped with silicon ...

MAGNETIC PARTICLES

A magnetic particle is disclosed. The magnetic particle comprises a magnetic material having a maximum field strength in a range of from about 20 emu/g to about 250 emu/g and a remanence in a range of from about 0 emu/g to about 30 emu/g. The magnetic particle further comprises an outer surface containing a ligand. The ligand interacts with an analyte of interest in the sample solution. 1. A composition of matter for processing or analyzing a sample solution , the composition of matter comprising:a population of magnetic particles having an average diameter in a range of from about 100 nm to about 100 μm, a maximum field strength in a range of from about 20 emu/g to about 250 emu/g, a remanence in a range of from about 0 emu/g to about 30 emu/g, and an outer surface containing a ligand, wherein the ligand interacts with an analyte of interest in the sample solution; anda reagent for processing or analyzing the sample according to a desired analytical method.2. The composition of matter of claim 1 , wherein the magnetic particles comprise ferrimagnetic material.3. The composition of matter of claim 1 , wherein the reagent comprises a precipitating reagent to selectively precipitate the analyte of interest in the sample solution.4. The composition of matter of claim 3 , wherein the precipitating reagent comprises polyethylene glycol.5. The composition of matter of claim 3 , wherein the ligand comprises a carboxyl group.6. The composition of matter of claim 3 , wherein the maximum field strength is in a range of from about 35 emu/g to about 100 emu/g.7. The composition of matter of claim 3 , wherein the remanence is in a range of from about 0 emu/g to about 10 emu/g.8. A method of processing a sample claim 3 , the method comprising:providing a population of magnetic particles, each particle having a ligand attached to an outer surface of the particle, wherein the ligand interacts with an analyte of interest in the sample, the population of magnetic particles having an ...

METHOD FOR MANUFACTURING Sr FERRITE PARTICLE FOR SINTERED MAGNET, METHOD FOR USING Sr FERRITE PARTICLE, Sr FERRITE SINTERED MAGNET AND METHOD FOR MANUFACTURING SAME, AND MOTOR AND GENERATOR

Provided is a method for producing Sr ferrite particles for sintered magnets, the method includes: a mixing step of mixing an iron compound, a strontium compound, and an alkali metal compound which includes at least one of K and Na as a constituent element and which does not include Cl and S as the constituent element to prepare a mixture; and a calcining step of firing the mixture at 850° C. to 1100° C. to obtain Sr ferrite particles in which an average particle size of primary particles is 0.2 to 1.0 μm. In the mixing step, the alkali metal compound is mixed in such a manner that a total amount of K and Na becomes 0.03 to 1.05% by mass in terms of KO and NaO with respect to a total amount of a powder of the iron compound and a powder of the strontium compound. 1. A method for producing Sr ferrite particles for sintered magnets , comprising:a mixing step of mixing an iron compound, a strontium compound, and an alkali metal compound which includes at least one kind of element selected from K and Na as a constituent element and which does not include Cl and S as the constituent element to prepare a mixture; anda calcining step of firing the mixture at 850 to 1100° C. to obtain Sr ferrite particles in which an average particle size of primary particles is 0.2 to 1.0 μm,{'sub': 2', '2, 'wherein in the mixing step, the alkali metal compound is mixed in such a manner that a total amount of K and Na becomes 0.03 to 1.05% by mass in terms of KO and NaO with respect to a total amount of a powder of the iron compound and a powder of the strontium compound.'}2. The method for producing Sr ferrite particles for sintered magnets according to claim 1 ,wherein a saturation magnetization of the Sr ferrite particles is 67 emu/g or more.3. The method for producing Sr ferrite particles for sintered magnets according to claim 1 ,wherein the alkali metal compound contains at least one kind of compound selected from carbonate and silicate.4. The method for producing Sr ferrite particles ...

COIL DEVICE

Provided is coil device 1 including: core including winding core part and flange parts provided on both edges of winding core part and coil part including wires wound on winding core part Electrode film having wire connecting part where wire edges are connected, and formed on a surface of the flange parts Metal terminal is connected to a terminal fitting part formed on a surface of electrode film at a place different from the wire connecting part. According to the invention, a coil device having a high reliability for bonding at mounting part can be provided. 1. a coil device comprising:a core including a winding core part and a flange part provided on an edge of the winding core part,a coil part comprised of a wire wound on the winding core part,an electrode film, having a wire connecting part where a wire edge of the wire is connected, and formed on a surface of the flange part, anda metal terminal, connected to a terminal fitting part formed on a surface of the electrode film at a place different from the wire connecting part.2. The coil device according to claim 1 , whereinthe metal terminal is fixed to the flange part by an adhesion member, at a place where the electrode film is not formed.3. The coil device according to claim 1 , further comprising a plate member having a flat external face.4. The coil device according to claim 2 , further comprising a plate member having a flat external face.5. The coil device according to claim 1 , wherein the metal terminal comprises:a mounting part faced and connected to a surface of a circuit board, anda mounting assistance part formed continuously from the mounting part.6. The coil device according to claim 2 , wherein the metal terminal comprises:a mounting part faced and connected to a surface of a circuit board, anda mounting assistance part formed continuously from the mounting part.7. The coil device according to claim 5 , wherein the mounting part is disposed opposite to the wire connecting part respectively on the ...

Magnetic microspheres for use in fluorescence-based applications

Microspheres, populations of microspheres, and methods for forming microspheres are provided. One microsphere configured to exhibit fluorescent and magnetic properties includes a core microsphere and a magnetic material coupled to a surface of the core microsphere. About 50% or less of the surface of the core microsphere is covered by the magnetic material. The microsphere also includes a polymer layer surrounding the magnetic material and the core microsphere. One population of microspheres configured to exhibit fluorescent and magnetic properties includes two or more subsets of microspheres. The two or more subsets of microspheres are configured to exhibit different fluorescent and/or magnetic properties. Individual microspheres in the two or more subsets are configured as described above.

POLYMER-ENCAPSULATED MAGNETIC NANOPARTICLES

Magnetic particles () have a particle size () of 500 nm or less and include a core () and a polymer coating () that surrounds and encapsulates the core (). The core () includes a metal, metal alloy, or metal oxide of at least one metal such as B, Mg, Al, Mn, Co, Ni, Cu, Fe Sm, Yb, Dy, Gd or Er and Nb. The magnetic core () is a polycrystalline particle and is a superspin glass magnetic material, having a coercivity greater than zero and a magnetic remenance greater than zero at room temperature. Above room temperature and at low field, the magnetic moment of these superspin glass magnetic materials increases with temperature. An in situ hydrolysis/precipitation method from precursor metal salts is used to form the polymer-encapsulated magnetic particles (). 1. Magnetic particles comprising:a magnetic core and a polymer coating;wherein the magnetic core comprises a metal, metal alloy, or metal oxide of at least one metal selected from the group consisting of B, Mg, Al, Mn, Co, Ni, Cu, Fe, Nb, Sm, Ln, Yb, Dy, Gd or Er;wherein the magnetic core comprises poly crystalline particles which are superparamagnetic and which are coalesced to form a superspin glass magnetic core;wherein the polymer coating surrounds the magnetic core;and wherein the magnetic particles exhibit coercivity greater than zero and less than 300 Oe and magnetic remenance greater than zero and less than 12 emu/g at room temperature;wherein the magnetic particle has a particle size of 500 run or less.2. The magnetic particles of wherein the poly crystalline particles of the magnetic core are the same crystalline phase.3. The magnetic particles of wherein the magnetic moment of the magnetic particle increases as the temperature increases above room temperature.4. The magnetic particles of claim 1 , wherein the particles comprise a saturation magnetization greater than 50 and less than 100 emu/g at room temperature.5. The magnetic particles of claim 1 , wherein the polycrystalline particles which have ...

Magnetic particles with a closed ultrathin silica layer, method for the production thereof and their use

A method for producing silicate-containing magnetic particles having a closed and tight silicate layer and high purity. In addition, the novel method prevents an uncontrolled formation of aggregates and clusters of silicates on the magnetite surface, thereby having a positive influence on the properties and biological applications. The method enables depletion of nanoparticulate solid substance particles on the basis of a fractionated centrifugation. The silicate-coated magnetic particles exhibit optimized magnetization and suspension behavior as well as advantageous run-off behavior from plastic surfaces. These highly pure magnetic particles coated with silicon dioxide are preferably used for isolating nucleic acids from cell and tissue samples, whereby the separating out from a sample matrix ensues by means of magnetic fields. The particles are particularly well suited for the automatic purification of nucleic acids, mostly from biological body samples for the purpose of analyzing them with different amplification methods.

FERRITE SHEET, METHOD FOR MANUFACTURING SAME, AND ELECTRONIC COMPONENT COMPRISING SAME

A ferrite sheet includes acicular ferrite powder, and has a uniaxially-oriented magnetic direction. The ferrite sheet is capable of remarkably increasing magnetic permeability and saturation magnetization, and accordingly is capable of remarkably improving the power efficiency of an electronic device by minimizing magnetic field leakage when being applied to a shielding sheet. 1: A ferrite sheet comprising an acicular ferrite powder and having a uniaxially-oriented magnetic direction.2: The ferrite sheet of claim 1 , wherein the ferrite powder includes at least one selected from the group consisting of hard ferrite and soft ferrite.3: The ferrite sheet of claim 2 , wherein the soft ferrite is at least one selected from the group consisting of Ni—Zn based ferrite claim 2 , Ni—Zn—Cu based ferrite claim 2 , Mn—Zn based ferrite claim 2 , Mg—Zn based ferrite claim 2 , and Ni—Mn—Zn based ferrite.4: The ferrite sheet of claim 1 , wherein magnetic permeability is in a range of 100 to 5000 in a frequency range of 100 KHz to 30 MHz.5: The ferrite sheet of claim 1 , wherein a thickness is in a range of 10 μm to 200 μm.6: A method for manufacturing a ferrite sheet claim 1 , comprising:manufacturing a ferrite green sheet comprising an acicular ferrite powder; andapplying a magnetic field during or after the manufacturing of the ferrite green sheet to uniaxially orient a magnetic direction.7: The method of claim 6 , wherein the applying of the magnetic field is performed together with sintering.8: The method of claim 7 , wherein the sintering is performed in a temperature range of 800° C. to 1000° C.9: A method for manufacturing a ferrite sheet complex claim 7 , comprising:{'claim-ref': {'@idref': 'CLM-00006', 'claim 6'}, 'attaching a protective sheet to at least one surface of the ferrite sheet manufactured according to ; and'}attaching a double-sided adhesive sheet to another surface of the ferrite sheet to form a ferrite sheet complex.10: The method of claim 9 , further ...

SOFT MAGNETIC COMPOSITE WITH TWO-DIMENSIONAL MAGNETIC MOMENT AND HIGH WORKING FREQUENCY BAND, AND PREPARATION METHOD THEREFOR

The present disclosure relates to a soft magnetic composite with a two-dimensional magnetic moment and a high working frequency band, and a preparation method therefor. According to an embodiment, the soft magnetic composite with a two-dimensional magnetic moment may comprise: an insulating matrix; and two-dimensional magnetic moment micropowder dispersed in the insulating matrix, wherein inside the two-dimensional magnetic moment micropowder, a magnetic moment is distributed in a specific two-dimensional plane. The soft magnetic composite with a two-dimensional magnetic moment of the present disclosure has a higher cut-off frequency than existing materials, and therefore can be widely applied in the field of high frequency microwave application 1. A soft magnetic composite with a two-dimensional magnetic moment , comprising:an insulating matrix; andtwo-dimensional magnetic moment micropowder dispersed in the insulating matrix,wherein inside the two-dimensional magnetic moment micropowder, magnetic moments are distributed in specific two-dimensional planes, andwherein the two-dimensional magnetic moment micropowder dispersed in the insulating matrix is orientated to enable the magnetic moments of the two-dimensional magnetic moment micropowder to be distributed in the two-dimensional planes.2. The soft magnetic composite with a two-dimensional magnetic moment of claim 1 , wherein the two-dimensional magnetic moment micropowder include at least one of artificial two-dimensional magnetic moment micropowder and intrinsic two-dimensional magnetic moment micropowder.3. The soft magnetic composite with a two-dimensional magnetic moment of claim 2 , wherein the artificial two-dimensional magnetic moment micropowder has a cubic crystalline structure claim 2 , andwherein the intrinsic two-dimensional magnetic moment micropowder has a non-cubic crystalline structure, and easy magnetization axes of the intrinsic two-dimensional magnetic moment micropowder are perpendicular to ...

FERRITE LAMINATE AND NOISE SUPPRESSION SHEET

In accordance with the present invention, there is provided a noise suppression sheet that is capable of absorbing noise at a wide frequency range of from 10 MHz to 1 GHz. The present invention relates to a ferrite laminate formed by laminating a conductive layer comprising a conductive filler and a resin and a magnetic layer comprising ferrite; the conductive layer has a surface electrical resistance of of 100 to 5000 Ω/□; the ferrite is partitioned into small parts; and a real part of a magnetic permeability of the ferrite as measured at 10 MHz is 130 to 480, and an imaginary part of of the magnetic permeability of the ferrite as measured at 10 MHz is 30 to 440. 1. A ferrite laminate comprising:a conductive layer comprising a conductive filler and a resin, anda magnetic layer comprising a sintered ferrite.2. The ferrite laminate according to claim 1 , wherein when subjecting the ferrite laminate to measurement of transmission attenuation using a microstripline claim 1 , an amount of transmission attenuation of the ferrite laminate is 3.6 to 8 dB as measured at 1 GHz claim 1 , and when subjecting the ferrite laminate to measurement of transmission attenuation using a loop antenna claim 1 , an amount of transmission attenuation of the ferrite laminate is 12 to 30 dB as measured at 10 MHz.3. The ferrite laminate according to claim 1 , wherein a real part of a magnetic permeability of the magnetic layer as measured at 10 MHz is 130 to 480 claim 1 , and an imaginary part of of the magnetic permeability of the magnetic layer as measured at 10 MHz is 30 to 440.4. The ferrite laminate according to claim 1 , wherein the conductive layer has a surface electrical resistance of 100 to 5000 Ω/□.5. The ferrite laminate according to claim 1 , wherein the conductive layer and the magnetic layer are laminated through an adhesive layer.6. The ferrite laminate according to claim 1 , wherein the ferrite laminate further comprises the adhesive layer or a protective layer on at least ...

LCP DERIVATIVE/SOFT MAGNETIC FERRITE COMPOSITE MATERIAL AND PREPARATION METHOD THEREFOR

The present invention provides an LCP derivative/soft magnetic ferrite composite material, which is prepared by complexing and assembling an LCP derivative as a host and soft magnetic ferrite particles as a guest. The present invention also provides a method for preparing the composite material. The composite material of the present invention has high stability and is not easily dissociated, and has high customized magnestic permeability, dielectricity, thermal stability, environmental resistance, and chemical resistance; and the preparation process of the composite material meets the energy-saving and emission reduction requirements. Therefore, the composite material has a wide industrial application prospect. The composite material of the present invention can be widely applied to the wireless communication field, the aviation, spaceflight and military fields, the microwave and radio frequency component application field, the automotive electronic component field, and the like. 2. The composite material according to claim 1 , wherein the weight-average molecular weight of the LCP derivative is 20000˜35000.3. The composite material according to claim claim 1 , wherein the molar ratio of the structural unit c to the soft magnetic ferrite particles is 5˜6:1.4. The composite material according to claim 3 , wherein the soft magnetic ferrite particles are manganese/zinc (MnZn) ferrite or nickel/zinc (NiZn) ferrite.5. A preparation method of the LCP derivative/soft magnetic ferrite composite material according to claim 1 , comprising the steps of:A. reacting 2,5-dimethyl-p-acetoxybenzoic acid, 2,5-dimethyl-p-aminobenzoic acid and 1,5-dimethyl-6-acetyloxy-2-naphthoic acid in presence of an acidic catalyst to prepare a LCP derivative oligomer;B. polarizing the LCP derivative oligomer obtained in the step A to form a helical oligomer;C. mixing the helical oligomer obtained in the step B with soft magnetic ferrite particles and subjecting to host-guest complex assembly; andD ...

Component For Electromagnetic Interference Suppression And Method For Producing A Component For Electromagnetic Interference Suppression

The invention relates to a component for electromagnetic interference suppression, consisting of ferrite powder with a hexagonal crystal structure, wherein the ferrite powder has the composition SrFeCO, C being a transition metal from the periodic table of elements. 1. Component for electromagnetic interference suppression , consisting of ferrite powder with a hexagonal crystal structure , characterized in that the ferrite powder has the composition SrFeCO , C being a transition metal from the periodic table of elements.2. Component according to claim 1 , characterised in that C is a transition metal from the fourth claim 1 , fifth claim 1 , ninth or tenth group of the periodic table of elements.3. Component according to claim 1 , characterised in that x lies between 0.9 and 1 claim 1 , and is in particular 1.4. Component according to claim 1 , characterized in that y lies between 0.1 and 0.8 claim 1 , in particular between 0.2 and 0.5 claim 1 , and is preferably between 0.3 and 0.4.5. Component according to claim 1 , characterized in that a grain size of the ferrite powder lies between 50 μm and 100 μm.6. Component according to claim 5 , characterized in that the grain size lies between 75 μm and 100 μm.7. Component according to claim 1 , characterized in that the component is formed as a half-shell claim 1 , plate claim 1 , sleeve claim 1 , ring claim 1 , or as a block with passage openings.8. Method for producing a component for electromagnetic interference suppression according to one of the preceding claims claim 1 , characterized by production of the ferrite powder from a mixture of Sr carbonate or Sr oxide claim 1 , Fe oxide and oxides of transition metals.9. Method according to claim 8 , characterized by heating of the mixture to a temperature of between 1100° C. and 1400° C.10. Method according to claim 8 , characterized by grinding of the calcined mixture in order to adjust the grain size.11. Method according to claim 10 , characterized by adjustment of ...

THERMALLY STABILIZED REDOX MATERIALS AND APPLICATIONS THEREOF

The present disclosure addresses limitations in ferritic materials. In at least one aspect, the present disclosure provides core-shell nanoparticles exhibiting improved characteristics for implementations and adaptability in numerous applications. Further aspects of the disclosure provide core-shell nanoparticles for use in electronic, magnetic and electro-magnetic applications. Still, other aspects of the present disclosure provide core-shell nanoparticles for a thermochemical water-splitting reaction resulting in increased Hvolume generation during multiple thermochemical cycles. 1. A method for forming core-shell nanoparticles , comprising:{'sub': 2', '2, 'providing sol-gel derived ferrite nanoparticles from NiCland FeClprecursors;'}dispersing the ferrite nanoparticles in surfactant thereby forming a first dispersion;adding a copolymer surfactant to the first dispersion;forming a composition by introducing the first dispersion into a second dispersion, the second dispersion comprising a surfactant and a precursor of Zr, wherein the Zr precursor comprises Zr isopropoxide of at least 70% in IPA;increasing the viscosity of the composition by adding one or more organic compounds; andcalcining the composition at one or more temperatures for one or more time periods for forming the core-shell nanoparticles.2. The method of further comprising:sintering the core-shell nanoparticles at a sintering temperature.3. The method of wherein the core-shell nanoparticles comprise NiFeO/YOnanoparticles.4. The method of wherein the NiFeO/ZrOnanoparticles further comprise calcining for at least 48 hours using a calcining process of at least 25° C.-150° C. at 2° C./min claim 1 , 150° C.-300° C. at 3° C./min claim 1 , and 300° C.-800° C. at 5° C./min.5. The method of further comprising:coating the core-shell nanoparticles with one or more electrically conductive materials.6. The method of further comprising:measuring magnetic and electrical properties of the core-shell nanoparticles.7. ...

LAYERED ELECTRONIC COMPONENT

A layered electronic component includes a multilayer body having a metallic magnetic material layer including metallic magnetic material particles and a coil being built in the multilayer body. The coil is formed of multiple conductor patterns spirally connected each other and stacked along an axis direction of the coil, and the multilayer body includes a nonmagnetic ferrite part arranged at least an inner area of the coil when viewed from a winding axis direction of the coil. 1. A layered electronic component comprising:a multilayer body having a metallic magnetic material layer including metallic magnetic material particles; anda coil in the multilayer body, the coil being formed of multiple conductor patterns spirally connected each other and stacked along a winding axis direction of the coil, and the multilayer body including a nonmagnetic ferrite part arranged at least an inner area of the coil when viewed from the winding axis direction of the coil.2. The layered electronic component according to claim 1 , wherein the nonmagnetic ferrite part has a substantially layered shape and is orthogonal to the winding axis direction of the coil claim 1 , and an outer peripheral part of the nonmagnetic ferrite part is exposed to a surface of the multilayer body.3. The layered electronic component according to claim 1 , wherein the nonmagnetic ferrite part is arranged across the coil.4. The layered electronic component according to claim 1 , wherein a nonmagnetic ferrite part is further arranged between the stacked conductor patterns.5. The layered electronic component according to claim 1 , wherein a volume average particle diameter of the metallic magnetic material particles is larger than a distance between stacked conductor patterns.6. The layered electronic component according to claim 1 , wherein the nonmagnetic ferrite part is in contact with at least one end portion of the coil.7. The layered electronic component according to claim 2 , wherein the nonmagnetic ...

Ferrite sintered body and electronic component using thereof

A ferrite sintered body of the invention includes; a main component including 48.65 to 49.45 mol % of iron oxide in terms of Fe2O3, 2 to 16 mol % of copper oxide in terms of CuO, 28.00 to 33.00 mol % of zinc oxide in terms of ZnO, and a balance including nickel oxide, and a subcomponent including boron oxide in an amount of 5 to 100 ppm in terms of B2O3 with respect to 100 parts by weight of the main component, in which the ferrite sintered body includes crystal grains having an average crystal grain size of 2 to 30 μm.

Room-Temperature Ferromagnetic-Ferroelectric Multiferroic Material

A multiferroic material for magnetic and electric switching including Iron selenide (FeSe) nanoparticles and its derivatives or doped with at least one element selected from transitional metals, rare earths elements or combination of the two and chalcogens. Ferroelectric polarization and coupling of magnetic and ferroelectric behavior in the doped Fe3Se4 is observed at a temperature ranging from 15 to 30° C. 1. A multiferroic material comprising FeSeor its derivatives , wherein the FeSeor its derivatives are optionally doped with at least one element selected from the group consisting of transitional metals , rare earths elements , chalcogens or combinations thereof , characterized in that ferroelectric polarization and coupling of magnetic and ferroelectric behaviour in FeSeor its derivatives is observed at the temperature ranging from 15 to 30° C.2. The material as claimed in claim 1 , wherein the FeSeor its derivatives is in form of nanoparticles claim 1 , nanorods claim 1 , thin film or bulk.3. The material as claimed in claim 1 , wherein the transitional metals and rare earths elements are selected from the group consisting of Chromium claim 1 , Cobalt claim 1 , Manganese claim 1 , Vanadium claim 1 , Gadolinium and Dysprosium.4. The material as claimed in claim 1 , wherein the chalcogens are selected from Sulfur claim 1 , and Tellurium.5. The material as claimed in claim 1 , wherein said material for use in magnetic and electric switching.6. A process for the preparation of multiferroic material FeSeor its derivatives comprising steps of:i) charging iron acetylacetonate and Selenium powder in a solvent under inert atmosphere to obtain a mixture;ii) optionally charging into the above mixture, at least one element selected from the group consisting of transition elements, rare earth elements and/or chalcogens or combinations thereof;iii) heating the mixture as obtained in step (i) or (ii) for 1-4 hour at a temperature in the range of 120-300° C.;iv) cooling to ...

Composite Magnetic Sheet and Wireless Charging Module Comprising Same

The present invention relates to an electromagnetic shielding sheet capable of improving reliability. Particularly, the present invention provides a composite magnetic sheet for electromagnetic shielding structured such that an independent soft magnetic sheet, which has a low surface roughness, is laminated on the outermost surface of a soft magnetic sheet having a lamination structure, thereby implementing laminated composite sheets having different surface roughness or porosity characteristics; as a result, the reliability in an external hazardous environment, such as saline water, can be substantially enhanced while maintaining the efficiency of electromagnetic shielding. 1. A composite magnetic sheet comprising:a first magnetic sheet part having a stacked structure of two or more unit magnetic sheets; anda second magnetic sheet part including a second magnetic sheet stacked on an outermost surface of the first magnetic sheet part,wherein a surface roughness of each of the two or more unit magnetic sheets is different from that of the second magnetic sheet.2. The composite magnetic sheet claim 1 , wherein the surface roughness of each of the two or more unit magnetic sheets is greater than that of the second magnetic sheet.3. The composite magnetic sheet claim 2 , wherein permeability of each of the two or more unit magnetic sheets is different from that of the second magnetic sheet.4. The composite magnetic sheet claim 3 , wherein the permeability of each of the two or more unit magnetic sheets is lower than that of the second magnetic sheet.5. The composite magnetic sheet claim 4 , wherein a volume of the first magnetic sheet part is in a range of 70% to 80% of an entire volume of the composite magnetic sheet on the basis of the entire volume.6. The composite magnetic sheet claim 4 , wherein the first magnetic sheet part includes one or more unit magnetic sheets having different porosity on the basis of the same volume.7. The composite magnetic sheet claim 6 , ...

Magnetic particles with a closed ultrathin silica layer, method for the production thereof and their use

A method for producing silicate-containing magnetic particles having a closed and tight silicate layer and high purity. In addition, the novel method prevents an uncontrolled formation of aggregates and clusters of silicates on the magnetite surface, thereby having a positive influence on the properties and biological applications. The method enables depletion of nanoparticulate solid substance particles on the basis of a fractionated centrifugation. The silicate-coated magnetic particles exhibit optimized magnetization and suspension behavior as well as advantageous run-off behavior from plastic surfaces. These highly pure magnetic particles coated with silicon dioxide are preferably used for isolating nucleic acids from cell and tissue samples, whereby the separating out from a sample matrix ensues by means of magnetic fields. The particles are particularly well suited for the automatic purification of nucleic acids, mostly from biological body samples for the purpose of analyzing them with different amplification methods. 1. A method of purification of nucleic acid from a biological sample , comprising:dissolving the biological sample containing a nucleic acid of HCV or HIV into a sample solution;adding silica-coated magnetic particles to the sample solution, the silica-coated magnetic particles each comprising a magnetite core and a silicate layer on the magnetite core, wherein the silicate layer is formed by depositing an initial-silicate layer on the magnetite core and continuously diluting using cross-flow microfiltration to reduce a pH value to a neutral pH value;incubating the sample solution at a temperature at which the nucleic acid bonds to the silica-coated magnetic particles;applying, at a first time, a first magnetic field to the sample solution;removing constituents not bonded to the silica-coated magnetic particles;removing unspecifically bonded molecules from the nucleic acid by applying and removing a washing buffer;separating nucleic acid from ...

INCORPORATION OF OXIDES INTO FERRITE MATERIAL FOR IMPROVED RADIO RADIOFREQUENCY PROPERTIES

Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material and methods of manufacturing. The hexagonal ferrite material can be Y-phase hexagonal ferrite material, such as those including strontium. In some embodiments, oxides consistent with the stoichiometry of SrCoFeO, SrFeOor CoFeOcan be used form an enhanced hexagonal ferrite material. 1providing a y-phase hexagonal ferrite material; and{'sub': 3', '2', '24', '41', '12', '19', '2', '4, 'incorporating an oxide consistent with the stoichiometry of SrCoFeO, SrFeOor CoFeOto form an enhanced hexagonal ferrite material.'}. A method for incorporating additional oxides to increase the magnetic properties of a hexagonal ferrite, the method comprising: This application is a continuation of U.S. patent Ser. No. 16/294,151, filed Mar. 6, 2019, which is a continuation of U.S. patent Ser. No. 14/887,773, filed Oct. 20, 2015, which claims from the benefit of U.S. Provisional Application Nos. 62/068,147, filed Oct. 24, 2014, titled “INCREASED RESONANT FREQUENCY ALKALI-DOPED Y-PHASE HEXAGONAL FERRITES,” 62/068,139, filed Oct. 24, 2014, titled “INCREASED RESONANT FREQUENCY POTASSIUM-DOPED HEXAGONAL FERRITE,” 62/068,146, filed Oct. 24, 2014, titled “MAGNETODIELECTRIC Y-PHASE STRONTIUM HEXAGONAL FERRITE MATERIALS FORMED BY SODIUM SUBSTITUTION,” and 62/068,151, filed Oct. 24, 2014, titled “INCORPORATION OF OXIDES INTO FERRITE MATERIAL FOR IMPROVED RADIOFREQUENCY PROPERTIES,” the entirety of each of which is incorporated herein by reference.Embodiments of the disclosure relate to methods of preparing compositions and materials useful in electronic applications, and in particular, useful in radio frequency (RF) electronics.For magnetodielectric antenna applications, it can be advantageous to have as high a permeability as possible (for better miniaturization factor and impedance match in free space) and as great a resonant frequency (maximum operating frequency) as possible. However, materials known ...

Soft magnetic resin composition and soft magnetic film

A soft magnetic resin composition contains flat soft magnetic particles, a resin component, and a rheology control agent.

Ferrite Magnetic Material And Ferrite Sintered Magnet

The present invention provides a ferrite magnetic material that is inexpensive by reducing the contents of La and Co and capable of providing a remarkably high maximum energy product ((BH) max ) as compared with the conventional ferrite magnetic materials by inducing a high saturation magnetization and a high anisotropic magnetic field.

TEMPERATURE-STABLE SOFT-MAGNETIC POWDER

The invention relates to a soft-magnetic powder coated with a silicon based coating, wherein the silicon based coating comprises at least one of the following fluorine containing compositions: 115-. (canceled)16. A soft-magnetic powder coated with a silicon based coating , wherein the silicon based coating comprises at least one of the following fluorine containing compositions: {'br': None, 'sub': 1-0,25a', 'a', '2-0,5b', 'b, 'SiM1OF\u2003\u2003(I)'}, 'a) a fluorine containing composition of formula (I)'}whereina is in the range of 0.015 to 0.52,b is in the range of 0.015 to 0.52,{'sup': 1', '1, 'sub': 4', '1-6, 'M1 is H, K, Rb, Cs or NR, wherein each Ris independently selected from the group consisting of H, Calkyl, phenyl and benzyl;'} {'br': None, 'sub': 1-0,75c', 'c', '2-0,5d', 'd, 'SiM2OF\u2003\u2003(II)'}, 'b) a fluorine containing composition of formula (II)'}whereinc is in the range of 0.005 to 0.17,d is in the range of 0.015 to 0.52,M2 is B or Al;or {'br': None, 'sub': 1-1,25e', 'e', '2-0,5f', 'f, 'SiPOF\u2003\u2003(III)'}, 'c) a fluorine containing composition of formula (III)'}whereine is in the range of 0.003 to 0.10, andf is in the range of 0.015 to 0.52.17. The soft-magnetic powder of claim 16 , comprising at least one fluorine containing composition of formula (I) claim 16 , wherein M1 is H claim 16 , Cs or NHand at least one fluorine containing composition of formula (II) claim 16 , wherein M2 is B.18. The soft-magnetic powder of claim 16 , wherein silicon based coating comprises between 0.1 to 5 wt.-% of the at least one fluorine containing composition of formula (I) claim 16 , (II) or (III).19. The soft-magnetic powder of claim 16 , wherein the fluorine component of the fluorine containing composition is embedded within a SiO-matrix and/or bonded to a surface of a SiO-coating.20. The soft-magnetic powder of claim 16 , wherein the silicon based coating has an average thickness of 2 to 100 nm.22. The process of claim 21 , wherein the soft-magnetic ...

METHOD FOR CONTINUOUS GROWTH OF WATER-SOLUBLE MAGNETIC NANOMATERIALS

Embodiments of a method for synthesizing water-soluble metal oxide nanoparticles are disclosed. In one embodiment, the method includes heating a first reaction mixture at a predetermined temperature for a predetermined time duration with continuous stirring to obtain a second reaction mixture that comprises water-soluble metal oxide nanoparticles of a first size. The first reaction mixture includes a reactant and a polyol. The method further includes adding a first predetermined amount of the reactant to the second reaction mixture to obtain a third reaction mixture. The method further includes heating the third reaction mixture at the predetermined temperature for the predetermined time duration with continuous stirring to obtain a fourth reaction mixture comprising water-soluble metal oxide nanoparticles of a second size. The reactant is Fe(acac)and the polyol is diethylene glycol (DEG) for synthesizing water-soluble iron oxide nanoparticles. 1. A method for synthesizing water-soluble metal oxide nanoparticles , the method comprising:a. heating a first reaction mixture at a predetermined temperature for a predetermined time duration with continuous stirring to obtain a second reaction mixture that comprises water-soluble metal oxide nanoparticles of a first size, the first reaction mixture comprising a reactant and a polyol;b. adding a first predetermined amount of the reactant to the second reaction mixture to obtain a third reaction mixture; andc. heating the third reaction mixture at the predetermined temperature for the predetermined time duration with continuous stirring to obtain a fourth reaction mixture comprising water-soluble metal oxide nanoparticles of a second size.2. The method as claimed in claim 1 , wherein the reactant is one of iron (II) acetate (Fe(CHO)) or iron (III) acetylacetonate (Fe(acac)) and wherein the water-soluble metal oxide nanoparticles correspond to water-soluble iron oxide nanoparticles.3. The method as claimed in claim 1 , ...

INCORPORATION OF OXIDES INTO FERRITE MATERIAL FOR IMPROVED RADIO RADIOFREQUENCY PROPERTIES

Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material and methods of manufacturing. The hexagonal ferrite material can be Y-phase hexagonal ferrite material, such as those including strontium. In some embodiments, oxides consistent with the stoichiometry of SrCoFeO, SrFeOor CoFeOcan be used form an enhanced hexagonal ferrite material. 1. (canceled)2. An improved hexagonal ferrite material having increased magnetic properties , the material comprising:{'sub': 1.6', '0.4', '1.6', '0.4', '11', '22, 'a Y-phase hexagonal ferrite having a composition SrNaCoScFeO; and'}{'sub': 3', '2', '24', '41, 'an oxide having a composition SrCoFeO, the material having a Q value of greater than about 20 at 800 MHz and a permeability of between 6-8 at 800 MHz to 1 GHz.'}3. The material of wherein the material includes about 2 wt. % SrCoFeO.4. The material of wherein the material includes 2 wt. % SrCoFeO.5. The material of wherein the SrNaCoScFeOis a first phase and the SrCoFeOis a second phase.6. The material of wherein the SrCoFeOis dissolved into the SrNaCoScFeO.7. The material of wherein the material has a Q value of greater than about 15 at 1 GHz.8. The material of wherein the material has a dielectric constant of about 10 to about 11.9. A radiofrequency device incorporating the hexagonal ferrite of .10. A high frequency antenna comprising a hexagonal ferrite material including a Y-phase hexagonal ferrite having a composition SrNaCoScFeO claim 2 , and an oxide having a composition SrCoFeO claim 2 , the material having a Q value of greater than about 20 at 800 MHz and a permeability of between 6-8 at 800 MHz to 1 GHz.11. The antenna of wherein the material includes about 2 wt. % SrCoFeO.12. The antenna of wherein the SrNaCoScFeOis a first phase and the SrCoFeOis a second phase.13. The antenna of wherein the SrCoFeOis dissolved into the SrNaCoScFeO.14. The antenna of wherein the material has a Q value of greater than about 15 at 1 GHz.15. The ...

INDUCTOR ELEMENT

An inductor element includes a wire-winding portion and a core portion. In the wire-winding portion, a conductor is wound in a coil shape. The core portion surrounds the wire-winding portion and contains a magnetic powder and a resin. An inner-core central region is a region of the core portion within a distance from a winding axis center of the wire-winding portion toward an existing region of the wire-winding portion in an outward direction perpendicular to the winding axis center. A top-plate central region is a region of the core portion within a distance from the winding axis center toward a no-existing region of the wire-winding portion in the outward direction. Sα−Sβ≥−2% is satisfied, where Sα (%) and sβ (%) are respectively an area ratio of the magnetic powder in the inner-core central region and the top-plate central region. 1. An inductor element , comprising:a wire-winding portion where a conductor is wound in a coil shape; anda core portion surrounding the wire-winding portion and containing a magnetic powder and a resin,wherein an inner-core central region is defined as a region of the core portion within a predetermined distance from a winding axis center of the wire-winding portion toward an existing region of the wire-winding portion in an outward direction perpendicular to the winding axis center,wherein a top-plate central region is defined as a region of the core portion within a predetermined distance from the winding axis center toward a no-existing region of the wire-winding portion in the outward direction, andwherein Sα−Sβ≥−2% is satisfied, where Sα (%) is an area ratio of the magnetic powder in the inner-core central region, and Sβ (%) is an area ratio of the magnetic powder in the top-plate central region, on a cross section of the inductor element passing the winding axis center and parallel thereto.2. The inductor element according to claim 1 , wherein Sα−Sβ≥−1% is satisfied.3. The inductor element according to claim 1 , wherein Sα−Sβ≥0% ...

Composite particles, coated particles, method for producing composite particles, ligand-containing solid phase carrier and method for detecting or separating target substance in sample

The present invention relates to composite particles, coated particles, a method of producing composite particles, a ligand-containing solid phase carrier, and a method of detecting or separating a target substance in a sample. The above described composite particles each contains an organic polymer and inorganic nanoparticles, wherein the content of the inorganic nanoparticles in the composite particles is more than 80% by mass, and wherein the composite particles have a volume average particle size of from 10 to 1,000 nm.

POLYMER-ENCAPSULATED MAGNETIC NANOPARTICLES

Magnetic particles have a particle size of 500 nm of less and include a core and a polymer coating that surrounds and encapsulates the core. The core includes a metal, metal alloy, or metal oxide of at least one metal such as B, Mg, Al, Mn, Co, Ni, Cu, Fe Sm, Ln, Yb, Dy, Gd or Er and Nb. The magnetic core is polycrystalline particles which are superspin glass magnetic materials having coercivity greater than zero and magnetic remenance greater than zero at room temperature. Magnetic moment of these superspin glass magnetic materials at low field show increasing with temperature over room temperature. An in situ hydrolysis/precipitation method from precursor metal salts is used to form the polymer-encapsulated magnetic particles. 113-. (canceled)14. A method of making a magnetic particle , comprising:forming a solution including a metal precursor, an oxidizing agent or reducing agent, a polymer source, and a basic compound; andincreasing the solution temperature to at least 50° C. to form magnetic particles having a magnetic core and a polymer coating that surrounds and encapsulates the magnetic core.15. The method of claim 14 , wherein the solution is aqueous.16. The method of claim 14 , wherein a mass ratio of metal to polymer in the solution ranges from 1:0.05 to 1:20.17. The method of claim 14 , wherein the magnetic particles are formed in the absence of a polymerization reaction.18. The method of claim 14 , wherein the magnetic core comprises a metal claim 14 , metal alloy claim 14 , or metal oxide of at least one of B claim 14 , Mg claim 14 , Al claim 14 , Mn claim 14 , Co claim 14 , Ni claim 14 , Cu claim 14 , Fe claim 14 , Nb claim 14 , Sm claim 14 , La claim 14 , Yb claim 14 , Dy claim 14 , Gd claim 14 , or Er.19. The method of claim 14 , wherein the magnetic core comprises polycrystalline particles which are superparamagnetic and coalesced to form a superspin glass magnetic core.20. The method of claim 19 , wherein the polycrystalline particles of the ...

SYSTEM IN PACKAGE DEVICE INCLUDING INDUCTOR

Described examples include a system in package (SIP) device, including: a first leadframe having a first surface and a second surface opposite the first surface; an integrated circuit die including solder bumps on a first surface and having a second opposite surface, the solder bumps mounted to the second surface of the first leadframe; a second leadframe having a first surface including a die pad portion, and a second opposite surface, the die pad portion attached to the second surface of the integrated circuit die; and an inductor mounted to the first surface of the first leadframe, the inductor having terminals with exterior portions electrically connected and mechanically connected to the first surface of the first leadframe, the inductor terminals spaced from one another by a portion of an inductor body, the portion of the inductor body between the inductor terminals spaced from the first surface of the first leadframe by a gap of at least 100 μms. 1. A semiconductor device comprising:a first metal portion and a second metal portion;an integrated circuit die between the first metal portion and the second metal portion;an inductor attached to the first metal portion via a conductive material, wherein the inductor includes terminals and a body portion, a bottom surface of the terminals extending beyond a plane along a bottom surface of the body portion such that there is a gap between the plane along the bottom surface of the body portion and the first metal portion.2. The semiconductor device of claim 1 , wherein the gap is at least 100 μm.3. The semiconductor device of claim 1 , wherein a height of the gap is equal to a height of the terminals and a height of the conductive material.4. The semiconductor device of claim 1 , wherein the conductive material is solder.5. The semiconductor device of and further comprising mold compound covering portions of the inductor claim 1 , the first metal portion claim 1 , the integrated circuit die claim 1 , and the second ...

CORE SHELL SUPERPARAMAGNETIC IRON OXIDE NANOPARTICLES WITH FUNCTIONAL METAL SILICATE CORE SHELL INTERFACE AND A MAGNETIC CORE CONTAINING THE NANOPARTICLES

Core shell nanoparticles of an iron oxide core, a silicon dioxide shell and an iron silicate interface between the core and the shell are provided. The magnetic properties of the nanoparticles are tunable by control of the iron silicate interface thickness. A magnetic core of high magnetic moment obtained by compression sintering the thermally annealed superparamagnetic core shell nanoparticles is also provided. The magnetic core has little core loss due to hysteresis or eddy current flow. 1. A superparamagnetic core shell nanoparticle , comprising:a superparamagnetic core of an iron oxide;a shell of a silicon dioxide coating the core; andan iron silicate interface layer between the core and the silicon dioxide shell;whereina diameter of the iron oxide core is 200 nm or less,the core shell particle is obtained by a process comprising:wet chemical precipitation of the core;coating of the core with a wet chemical silicate synthesis to form the silicon dioxide shell, andthe thickness of the metal silicate interface is controlled by the time of the wet chemical synthesis.2. The superparamagnetic core shell nanoparticle according to claim 1 , wherein the iron silicate of the interface layer comprises an iron orthosilicate of a formula: SiFeO.3. The superparamagnetic core shell nanoparticle according to claim 1 , wherein the thickness of the iron silicate interface layer is from 0.25 nm to 20 nm.4. The superparamagnetic core shell nanoparticle according to claim 1 , wherein the superparamagnetic iron oxide core comprises a compound of formula: FeO.5. The superparamagnetic core shell nanoparticle according to claim 1 , wherein the diameter of the iron oxide core is from 2 to 75 nm.6. A magnetic core claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a plurality of the superparamagnetic core shell nanoparticles according to ;'}whereinthe magnetic core is a monolithic structure of superparamagnetic core grains of an iron oxide directly bonded by the ...

PLATE SHAPED FERRITE PARTICLES HAVING METALLIC LUSTER FOR PIGMENT

An object is to provide a plate shaped ferrite particle for a pigment, having both of electromagnetic wave shielding ability and designability, a resin molded material containing the plate shaped ferrite particle a pigment, and an electromagnetic wave shield housing for storing an electronic circuit manufactured by using the resin molded material. To achieve the object, the plate shaped ferrite particles for a pigment having a metallic luster, a resin molded material containing the plate shaped ferrite particles for a pigment, an electromagnetic wave shield housing for storing an electronic circuit manufactured by using the resin molded material are employed. 1. A plate shaped ferrite particle for a pigment characterized in having a metallic luster.2. The plate shaped ferrite particle for a pigment according to claim 1 , wherein the ferrite particle has a length in a minor axis direction of 3 to 100 μm claim 1 , and a length in a major axis direction of 10 to 2000 μm.3. A resin molded material containing the plate shaped ferrite particle for a pigment according to .4. An electromagnetic wave shield housing for storing an electronic circuit made of the resin molded material according to .5. A resin molded material containing the plate shaped ferrite particle for a pigment according to .6. An electromagnetic wave shield housing for storing an electronic circuit made of the resin molded material according to . The present invention relates to a plate shaped ferrite particles having a metallic luster for a pigment, and more particularly to a plate shaped ferrite particles for a pigment having electromagnetic wave shielding ability and designability, a resin molded material containing the plate shaped ferrite particles for a pigment, and an electromagnetic wave shield housing for storing an electronic circuit manufactured by using the resin molded material.In recent digital electronic communication equipment with high performance and miniaturization, it is concerned that ...

INCREASED RESONANT FREQUENCY POTASSIUM-DOPED HEXAGONAL FERRITE

Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material and methods of manufacturing. The hexagonal ferrite material can be Y-phase strontium hexagonal ferrite material. In some embodiments, strontium can be substituted out for a trivalent or tetravalent ion composition including potassium, thereby providing for advantageous properties. 120-. (canceled)21. A method of forming a strontium-potassium ceramic material comprising:{'sub': 2', '2', '12', '22, 'adding potassium as an excess material into SrCoFeO;'}{'sub': 2', '2', '12', '22, 'adding a trivalent ion as an excess material into the SrCoFeO; and'}{'sub': 2', '2', '12', '22', '2', '2', '12', '22, 'sintering the trivalent ion, the potassium, and the SrCoFeOtogether, the potassium and the trivalent ion substituting at least some of the cobalt and the strontium of the SrCoFeO.'}22. The method of claim 21 , wherein the trivalent ion is selected from the group consisting of Sc claim 21 , Mn claim 21 , In claim 21 , Cr claim 21 , Ga claim 21 , Co claim 21 , Ni claim 21 , Fe claim 21 , Yb claim 21 , Er claim 21 , Y claim 21 , and lanthanide ions.23. The method of claim 21 , wherein a same amount of the potassium and the trivalent ion are added into the SrCoFeO.24. The method of claim 23 , wherein between 0 and 1.5 units of the potassium and the trivalent ion are added into the SrCoFeO.25. The method of claim 23 , wherein between 0.2 and 0.7 units of the potassium and the trivalent ion are added into the SrCoFeO.26. The method of claim 21 , wherein the trivalent ion is scandium and 0.25 units of the potassium and the scandium are added into the SrCoFeO.27. The method of claim 21 , wherein the trivalent ion is indium and 0.25 units of the potassium and the indium are added into the SrCoFeO.28. The method of claim 21 , wherein the trivalent ion is scandium and 0.5 units of the potassium and the scandium are added into the SrCoFeO.29. A method of forming a strontium-potassium ceramic ...

INDUCTOR COMPONENT

An inductor component includes a multilayer body including a magnetic layer and a spiral wiring line disposed in the multilayer body. The magnetic layer includes a base resin, a metal magnetic powder, and a non-magnetic powder. The base resin has voids, and the metal magnetic powder and the non-magnetic powder are contained in the base resin. There is a particle of the metal magnetic powder that is in contact with at least one of the voids and with the non-magnetic powder. 1. An inductor component comprising:a multilayer body including a magnetic layer; andan inductor wiring line disposed in the multilayer body,whereinthe magnetic layer includes a base resin, a metal magnetic powder, and a non-magnetic powder, the base resin having voids, and the metal magnetic powder and the non-magnetic powder being contained in the base resin, andthe metal magnetic powder has a particle that is in contact with at least one of the voids and with the non-magnetic powder.2. The inductor component according to claim 1 , whereinthe non-magnetic powder includes silica.3. The inductor component according to claim 1 , whereinparticles of the metal magnetic powder and particles of the non-magnetic powder each have a spherical shape.4. The inductor component according to claim 1 , whereinthe metal magnetic powder contains iron.5. The inductor component according to claim 4 , whereinthe metal magnetic powder contains from 1 wt % to 5 wt % of chrome.6. The inductor component according to claim 1 , whereinthe metal magnetic powder has an average particle diameter of from 1 μm to 5 μm, andthe non-magnetic powder has an average particle diameter that is smaller than the average particle diameter of the metal magnetic powder.7. The inductor component according to claim 1 , whereina particle diameter of the non-magnetic powder that is in contact with the metal magnetic powder is one-third or less of a particle diameter of the metal magnetic powder, which is in contact with the non-magnetic powder ...

Magnetic particles with a closed ultrathin silica layer, method for the production thereof and their use

The invention relates to magnetic particles coated with silica (SiO2). The silica layer is closed and tight and is characterized by having an extremely small thickness on the scale of a few nanometers hereafter also referred to as a silica nanolayer. The invention also relates to an improved method for producing these silica-containing magnetic particles that, in comparison to the prior art, lead to a product having a closed silica layer and thus entail a highly improved purity. In addition, the novel method prevents an uncontrolled formation of aggregates and clusters of silicates on the magnetite surface whereby positively influencing the additional cited properties and biological applications. The novel method also enables the depletion of nanoparticulate solid substance particles on the basis of a fractionated centrifugation. The inventive magnetic particles exhibit an optimized magnetization and suspension behavior as well as a very advantageous run-off behavior from plastic surfaces. These highly pure magnetic particles coated with silicon dioxide are preferably used for isolating nucleic acids from cell and tissue samples, the separating out from a sample matrix ensuing by means of magnetic fields. These particles are particularly well-suited for the automatic purification of nucleic acids, mostly from biological body samples for the purpose of detecting them with different amplification methods.

Magnetic particles containing silicon, process for their production and use of the particles

The invention relates to superparamagnetic particles consisting of spherical magnetite cores having a surface layer of silicon dioxide. The magnetite particles coated with silicon dioxide are used to isolate nucleic acids, said nucleic acids being isolated from a sample matrix by means of magnetic fields.

Electromagnetic shielding

Electromagnetic shielding material is formed from a shielding composition made with magnetic particles and a binder, where the magnetic particles have an average diameter less than about 1000 nm and are substantially crystalline. The magnetic particles can be formed from Fe 2 O 3 , Fe 3 O 4 , Fe 3 C, or Fe 7 C 3 . The shielding composition can be formed into a layer or into composite particles. The binder can be a metal or an electrically conducting polymer. A conducting layer can be placed adjacent to the shielding composition. The shielding material can be used to protect sensitive electronic devices. Methods are described for forming iron oxide particles by laser pyrolysis.

Composite particles, coated particles, method for producing composite particles, ligand-containing solid phase carrier, and method for detecting or separating target substance in sample

The present invention pertains to: composite particles; coated particles; a method for producing composite particles; a ligand-containing solid phase carrier; and a method for detecting or separating a target substance in a sample. The composite particles contain an organic polymer and inorganic nanoparticles. The composite particles contain the inorganic nanoparticles in an amount exceeding 80% by mass, and have a volume average particle diameter of 10-1000 nm.

Silicon-containing magnetic particles, method for producing said particles and use of the same

Dispersion containing pyrogenically produced abrasive particles with superparamagnetic domains

Abrasivpartikel enthaltende Dispersion, die pyrogen hergestellte Partikel enthält, die superparamagnetischen Metalloidoxid-Domänen in einer nichtmagnetischen Metall- oder Metalloxid-Matrix aufweisen. Die Dispersion kann eine mittlere Partikelgröße von weniger als 400 nm und eine BET-Oberfläche von 50 bis 600 m·2·/g aufweisen. Die Dispersion kann hergestellt werden, indem die Abrasivpartikel mit mindestens 200 kJ/m·3· dispergiert werden. Besonders bevorzugt ist eine Vorrichtung, bei der die Abrasivpartikel, unter hohem Druck stehend, über eine Düse entspannt werden und miteinander oder gegen Wandbereiche der Vorrichtung kollidieren. Die Dispersion kann beim chemisch-mechanischen Polieren (CMP) eingesetzt werden. Dispersion containing abrasive particles, which contains pyrogenically produced particles which have superparamagnetic metalloid oxide domains in a non-magnetic metal or metal oxide matrix. The dispersion can have an average particle size of less than 400 nm and a BET surface area of 50 to 600 m · 2 · / g. The dispersion can be produced by dispersing the abrasive particles with at least 200 kJ / m · 3 ·. A device is particularly preferred in which the abrasive particles, under high pressure, are expanded via a nozzle and collide with one another or against wall regions of the device. The dispersion can be used in chemical mechanical polishing (CMP).

Dispersion containing abrasive particles produced by pyrogenesis which contain superparamagnetic domains

Dispersion containing pyrogenically manufactured abrasive particles with superparamagnetic domains, a process for preparing the same and a process for the chemical mechanical polishing using the same

본 발명은 비자성의 금속 또는 비금속 산화물 매트릭스에서 초상자성(superparamagnetic) 금속 산화물 도메인을 나타내는, 열분해법으로 제조된 연마제 입자를 함유하는 분산액에 관한 것이다. 당해 분산액은, 평균 입자 크기가 400nm 미만이고 BET 표면적이 50 내지 600m 2 /g일 수 있다. 당해 분산액은 연마제 입자를 200kJ/m 3 이상으로 분산시킴으로써 제조될 수 있다. 연마제 입자가 고압하에 노즐을 통해 감압되고 입자들끼리 충돌하거나 장치내 벽면에 충돌되는 장치가 특히 바람직하다. 당해 분산액은 화학적 기계적 연마(CMP)에 사용될 수 있다. The present invention relates to dispersions containing abrasive particles produced by pyrolysis, which exhibit superparamagnetic metal oxide domains in a nonmagnetic metal or nonmetal oxide matrix. The dispersion may have an average particle size of less than 400 nm and a BET surface area of 50 to 600 m 2 / g. The dispersion may be prepared by dispersing the abrasive particles at 200 kJ / m 3 or more. Particular preference is given to an apparatus in which the abrasive particles are depressurized through the nozzle under high pressure and the particles collide with each other or collide against the wall inside the apparatus. The dispersion can be used for chemical mechanical polishing (CMP). 초상자성 도메인, 열분해법으로 제조, 연마제 입자, 분산액, CMP 공정 Superparamagnetic domains, manufactured by pyrolysis, abrasive particles, dispersions, CMP processes

磁性体材料

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Ferrite powder of metal, ferrite material comprising the same, and multilayered chip materials comprising ferrite layer using the ferrite material

본 발명은 코어-쉘 구조를 가지며, 상기 코어는 철(Fe) 또는 철(Fe)을 포함하는 철계 화합물이고, 상기 쉘은 금속산화물로 이루어진 것인 자성 분말, 상기 자성 분말과 글래스를 포함하는 자성층 재료, 및 상기 자성층 재료를 이용한 자성층, 내부전극 및 외부전극을 포함하는 적층형 칩 부품에 관한 것이다. 본 발명에 따르면, 고 전류에서 자화를 억제하여 전류인가에 따른 인덕턴스 L값의 변화를 개선할 수 있는 자성층 재료를 제공할 수 있다. 본 발명에 따른 자성층 재료를 포함하는 적층형 칩 부품은 MHz 대역에서도 사용 가능하다. The present invention relates to a magnetic powder having a core-shell structure, wherein the core is an iron-based compound containing iron (Fe) or iron (Fe) and the shell is made of a metal oxide, And a multilayer chip component including a magnetic layer using the magnetic layer material, an inner electrode, and an outer electrode. According to the present invention, it is possible to provide a magnetic layer material capable of suppressing magnetization at a high current and improving a change in inductance L value due to current application. A stacked chip component comprising the magnetic layer material according to the present invention is also usable in the MHz band.

一种掺杂改性镍粉的铁基软磁复合材料及其制备方法

本发明公开一种掺杂改性镍粉的铁基软磁复合材料，由以下重量份的原料组成：铁粉40‑55，纳米高岭土7‑16，正硅酸乙酯20‑32，十二烷基苯磺酸钠3‑7，聚乙烯吡咯烷酮12‑22，甲基丙烯酸甲酯16‑35，乙醇适量，去离子水适量，引发剂3‑6，饱和NaCl溶液适量，硅酸铝2‑6，氯化石蜡1‑4，纳米镍粉6‑13，油酸0.3‑0.8，氧化镍2‑5。本发明制备得到二氧化硅网状结构覆盖在纳米高岭土与铁粉混合颗粒表面，之后与甲基丙烯酸甲酯原位聚合，得到聚甲基丙烯酸甲酯接枝包覆磁性颗粒，提高材料的致密性，降低气孔率，提高绝缘性以保护铁粉颗粒被氧化腐蚀，提高材料的比饱和磁感应强度，磁性稳定。

具有超薄封闭二氧化硅层的磁性粒子及其制造和使用方法

本发明涉及一种涂有二氧化硅(SiO2)的磁性粒子，其中，二氧化硅层封闭、致密，且具有厚度极薄的特点，其厚度仅在几纳米范围内(下文也称其为“二氧化硅纳米层”)。此外，本发明还涉及一种制备这种含二氧化硅磁性粒子的改良方法，与现有技术相比，通过这种方法不仅能获得具有封闭二氧化硅层的产品，还能大幅提高纯度。通过这种新方法还能避免磁铁矿表面不受控制地形成硅酸盐聚集体，从而对下文将要说明的特性和生物用途产生有利影响。此外，这种新方法还可在分级离心基础上减少纳米固体颗粒。本发明的磁性粒子具有最佳磁化性能和悬浮性能，并且能非常有利地脱离塑料表面。这种涂有二氧化硅的高纯度磁性粒子优选用于从细胞样品或组织样品中分离核酸，其中，这种样品基质分离借助于磁场而实现。这种粒子特别适用于核酸(大多源于生物体样品)的自动提纯，以便通过各种扩增方法对其进行检测。

一种注塑铁氧体软磁料及其制备方法

本发明属于磁性材料的技术领域，更具体地涉及一种注塑铁氧体软磁料及其制备方法。该注塑铁氧体软磁料包括锶钡铁氧体、乙烯‑丙烯酸乙酯共聚物、润滑剂、偶联剂、添加剂。本发明的注塑铁氧体软磁料具有良好的流动性，且注塑成型而得到的成型体具有密度高、强度高、磁性能高的特性。

Composite particle, coated particle, method of producing composite particle, ligand-containing solid carrier and method of detecting or separating target substance in sample

本発明は、複合粒子、被覆粒子、複合粒子の製造方法、リガンド含有固相担体および試料中の標的物質を検出または分離する方法に関し、該複合粒子は、有機高分子および無機ナノ粒子を含む複合粒子であって、該複合粒子中の前記無機ナノ粒子の含有量が８０質量％超であり、体積平均粒径が１０〜１０００ｎｍである。   The present invention relates to a composite particle, a coated particle, a method for producing a composite particle, a ligand-containing solid support and a method for detecting or separating a target substance in a sample, the composite particle comprising a composite comprising an organic polymer and inorganic nanoparticles. It is a particle, and the content of the inorganic nanoparticle in the composite particle is more than 80% by mass, and the volume average particle diameter is 10 to 1000 nm.

Elevated Ferrite Core

본 발명은 Mn-Zn계 페라이트 코어에 관련된 것으로써, 어몰퍼스 합금계 코어 보다 저렴한 비용으로 제조함과 아울러, 포화자속밀도와 각형비의 특성이 개선되도록 하는데 목적을 두고 있다. 본 발명의 Mn-Zn계 페라이트 코어는 산화철(Fe 2 O 3 ), 산화망간(Mn 3 O 4 ), 산화아연(ZnO)으로 이루어진 주성분의 분말을 각각 몰퍼센트로 계량하여 혼합하고, 상기 혼합된 분말을 900℃에서 2시간 동안 열처리한다. 상기 열처리된 분말을 기준으로 무게퍼센트로 계량하여 각각 탄산칼슘(CaCO 3 ), 산화규소(SiO 2 ), 산화알루미늄(Al 2 0 3 ), 산화바나듐(V 2 O 5 )을 일정량 첨가하여 습식 분쇄한 후, 3%의 폴리비닐알코올 용액을 전체 페라이트 코어의 구성물질의 10무게퍼센트 만큼 첨가하여 혼합하고, 압착한 후 소결하여 제조한다.

Superparamagnetic oxidic particles, processes for their production and their use

본 발명은 비자성 금속 또는 준금속 산화물 매트릭스 속에 직경 3 내지 20nm의 초상자성 금속 산화물 도메인을 함유하고 염화물 함량이 50 내지 1000ppm인 열분해법 산화물 입자에 관한 것이다. 이는 초상자성 도메인의 전구체와 비자성 금속 또는 준금속 산화물 매트릭스의 전구체를 화염 속에서 공기 및/또는 산소 및 연료 가스와 혼합하고 당해 혼합물을 화염 속에서 반응시킴으로써 열분해법에 의해 생성된다. 당해 입자는, 예를 들면, 페로 플루이드(ferro fluid)로서 사용될 수 있다. The present invention relates to pyrolytic oxide particles containing superparamagnetic metal oxide domains with a diameter of 3 to 20 nm in a nonmagnetic metal or metalloid oxide matrix and having a chloride content of 50 to 1000 ppm. It is produced by pyrolysis by mixing the precursor of the superparamagnetic domain and the precursor of the nonmagnetic metal or metalloid oxide matrix with air and / or oxygen and fuel gas in the flame and reacting the mixture in the flame. The particles can be used, for example, as ferro fluid.

High-frequency low-loss soft magnet ferrite core material

本发明公开了一种高频低损耗软磁铁氧体磁芯材料，由以下重量份的原料制备制成：三氧化二铁5153、氧化锌1214、氧化锰3436、三氧化二钕34、丁苯橡胶0.30.5、丁基醚聚二甲基硅氧烷0.30.5、硅酸酯11.4、聚丙烯酸钠0.60.7、硅烷偶联剂kh5502.33、聚醋酸乙烯乳液0.50.7、煅烧高岭土0.30.4、粉煤灰0.20.3、聚酰胺树脂33.5、硅酸钠22.5、硅溶胶11.5、聚乙烯醇11.2、磁性碳粉1.42、纳米氧化镧1.22、去离子水适量；本发明在保证磁体性能的同时，显著降低材料成本，增强了铁氧体磁材料的市场核心竞争力，具有广阔的市场前景。

Hexagonal ferrite, and antenna and communication equipment using the same

(과제)소결체 밀도가 높고, 손실이 작은 Y형 육방정 페라이트 및 안테나를 제공한다. (Problem) Provides Y-type hexagonal ferrite and antenna with high sintered density and low loss. (해결수단)Y형 페라이트를 주상으로 하는 육방정 페라이트로서, 상기 육방정 페라이트는 M1O(M1은 Ba, Sr 중 적어도 일종), M2O(M2는 Co, Ni, Cu, Zn, Mn 중 적어도 일종) 및 Fe 2 O 3 를 주성분으로 하고, 손실계수가 0.15 이하이며, 또한 소결체 밀도가 4.6×10 3 ㎏/m 3 이상인 것을 특징으로 한다. 또한, 상기 육방정 페라이트를 이용하여 안테나, 통신기기를 구성한다. (Solution) Hexagonal ferrite having a Y-type ferrite as a main phase, wherein the hexagonal ferrite is M1O (M1 is at least one of Ba and Sr) and M2O (M2 is at least one of Co, Ni, Cu, Zn, and Mn). And Fe 2 O 3 as a main component, the loss coefficient is 0.15 or less, and the sintered compact is 4.6 × 10 3 kg / m 3 or more. In addition, the hexagonal ferrite is used to configure an antenna and a communication device.

The preparation method of the Mn-Zn soft magnetic ferrite of ultra low temperature magnetic conductivity stability

本发明公开了一种超低温度磁导率稳定性的锰锌软磁铁氧体材料的制备方法，包括以下步骤：步骤一、一次球磨粉碎：将主成份、去离子水和胶合剂装入球磨机进行球磨，球磨后喷雾造粒制成一次颗粒料，主成份为Fe 2 O 3 、MnO和ZnO，及相应的其摩尔比为(52.5‑55.0)：(34.0‑36.5)：(11.5‑13.5)；步骤二、主成份预烧；步骤三、二次粉碎球磨粉碎；步骤四、成型；步骤五、烧结。本发明具有超低温度磁导率稳定的优点。

LCP (Liquid Crystal Polymer) deviate/ soft magnetic ferrite composite material and preparation method thereof

本发明提供了一种LCP衍生物/软磁性铁氧体复合材料，其由LCP衍生物作为主体、软磁性铁氧体颗粒作为客体通过络合组装制得。本发明还提供了所述复合材料的制备方法。本发明复合材料稳定性好、不易发生复合材料的解离，具有良好的可定制的磁导性、介电性、热稳定性、耐环境性、耐化学性，制备工艺满足节能减排要求，具有广阔的工业化应用前景。本发明复合材料可广泛应用于无线通讯领域、航空航天军事领域、微波-射频器件应用领域、汽车电子器件领域等等。

Magnetic particles

A magnetic particle is disclosed. The magnetic particle comprises a magnetic material having a maximum field strength in a range of from about 20 emu/g to about 250 emu/g and a remanence in a range of from about 0 emu/g to about 30 emu/g. The magnetic particle further comprises an outer surface containing a ligand. The ligand interacts with an analyte of interest in the sample solution.

High-frequency ultralow-loss manganese-zinc soft magnetic ferrite material and preparation method thereof

本发明涉及一种高频超低损耗锰锌软磁铁氧体材料及其制备方法，该高频超低损耗锰锌软磁铁氧体材料组成为以质量份数为140份‑146份的Fe 2 O 3 ，39份‑48份的Mn 3 O 4 ，8份‑15份ZnO为主成分，第一次添加微量的的CaCO 3 、CoO、Cr 2 O 3 ；第二次添加微量的Y 2 O 3 、Sm 2 O 3 、SiO 2 和V 2 O 5 ；采用固相法，通过配料、砂磨、掺杂、造粒、成型和气氛烧结，制备获得高频超低损耗的磁芯材料。该材料在100℃、1MHz、30mT条件下，测试功率损耗低于90 kW/m 3 。此发明制作能耗小、绿色环保且综合性能良好，可以应用在激光器电源、车载电子数子模块、航空航天大功率电源等领域。

Radio wave absorption material and radio wave absorber

本发明提供电波吸收材料，其通过焙烧铁氧体材料而获得，所述铁氧体材料通过向包含30摩尔％至49.5摩尔％的Fe 2 O 3 、0.5摩尔％至20摩尔％的Mn 2 O 3 、5摩尔％至35摩尔％的ZnO、0.2摩尔％至1 5摩尔％的(Li 0.5 Fe 0.5 )O和作为剩余部分的MnO在内的氧化物磁性材料中加入0.1重量％至2重量％的CoO而形成。在上述组成中，部分ZnO可被20摩尔％以下的CuO置换。该电波吸收材料具有高强度和高湿度稳定性，尽管成本低，但具有优异的电波吸收性能。

Soft magnetic composites and manufacturing method thereof

The present invention relates to a soft magnetic composite material and a manufacturing method thereof. The manufacturing method comprises: a step of manufacturing an epoxy resin solution comprising 80-96 mass% of soft magnetic powder, 2-10 mass% of epoxy resin powder, 0.1-5 mass% of a hardener, and 1-5 mass% of a removing agent by dissolving the epoxy resin powder in an organic solvent; a step of manufacturing a soft magnetic mixture by mixing the soft magnetic powder and the removing agent; a step of mixing and stirring the epoxy resin solution and the soft magnetic mixture to make slurry; and a step of injecting the slurry into a mold and heating and pressurizing at 150-180°C to manufacture a formed body. The present invention can provide a formed body of a soft magnetic composite material which facilitates size adjustment, simplifies a manufacturing process to increase productivity, and minimizes property degradation.

Electrophotographic ferrite carrier

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Magnetic toner composition

Magneto resistive elements and methods for manufacture and use of same

The instant disclosure provides and describes a magneto resistive element comprised of a first electrode; a second electrode; and a semi conductive/conductive organic layer disposed between the first and second electrodes, wherein the magneto resistive element has a predetermined resistance (R). The magneto resistive elements provide a magneto resistive response when influenced by an applied magnetic field. The magneto resistive elements can be integrated into a variety of systems including, without limitation, magnetic field detection systems and display devices.

Method for producing ferrite material and ferrite material

Fe 2 O 3 ：62~68 mol%, ZnO：12~20 mol%이고, 나머지 부분이 실질적으로 MnO를 주성분으로 하는 페라이트 재료의 제조 방법으로서, 비표면적이 2.5~5.0 m 2 /g의 범위에 있고 90% 지름이 10μm 이하인 주성분을 포함한 분말을 이용하여 성형체를 얻는 성형 공정과, 성형 공정으로 얻어진 성형체를 소성하는 소성 공정을 구비한다. 이에 의해, Mn－Zn계 페라이트의 포화 자속밀도를 향상시킬 수 있다. Fe 2 O 3 : 62-68 mol%, ZnO: 12-20 mol%, The remaining part is a manufacturing method of the ferrite material which has MnO as a main component substantially in the range of 2.5-5.0 m < 2> / g. And a molding step of obtaining a molded article using a powder containing a main component having a 90% diameter of 10 μm or less, and a firing step of firing the molded article obtained by the molding step. Thereby, the saturation magnetic flux density of Mn-Zn type ferrite can be improved.

Ferrite magnetic material

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

A kind of LCP derivative/soft magnetic ferrite matrix material and preparation method thereof

本发明提供了一种LCP衍生物/软磁性铁氧体复合材料，其由LCP衍生物作为主体、软磁性铁氧体颗粒作为客体通过络合组装制得。本发明还提供了所述复合材料的制备方法。本发明复合材料稳定性好、不易发生复合材料的解离，具有良好的可定制的磁导性、介电性、热稳定性、耐环境性、耐化学性，制备工艺满足节能减排要求，具有广阔的工业化应用前景。本发明复合材料可广泛应用于无线通讯领域、航空航天军事领域、微波-射频器件应用领域、汽车电子器件领域等等。

A kind of high intensity magnetic core and preparation method thereof

本发明提供一种高强度磁芯及其制备方法，涉及磁芯生产技术领域。所述磁芯由以下重量份的原料制成：氧化铁50‑54份、氧化铜18‑22份、氧化锌12‑16份、氧化镍6‑10份、三氧化二铬14‑18份、碳酸镍12‑16份、碳酸锰10‑14份、氧化钴8‑12份、氢氧化镁6‑10份、四氧化三锰14‑18份、碳化铬12‑16份、碳化钨10‑14份、氧化钋8‑12份、氢氧化铝6‑10份、偶联剂2‑4份、促进剂1‑3份、消泡剂1‑3份。本发明克服了现有技术的不足，有效提高了磁芯的强度，防止其在装配过程中出现损坏，大大延长了磁芯的使用寿命，使用效果好，同时有效提高了磁芯的阻抗、居里温度和磁导率等特性，磁芯内应力小，性能优越，适宜推广。

Coil electronic component and manufacturing method thereof

본 발명의 일 실시형태는 내부에 코일부가 배치된 바디; 및 상기 코일부와 연결되는 외부전극; 을 포함하며, 상기 바디는 복수의 자성 입자를 포함하고, 상기 바디에 포함된 자성 입자의 입도 분포 D 50 은 1μm 이하인 코일 전자부품을 제공한다. An embodiment of the present invention includes a body having a coil portion disposed therein; And an external electrode connected to the coil portion; Wherein the body includes a plurality of magnetic particles, and the particle size distribution D 50 of the magnetic particles included in the body is 1 μm or less.

Magnetic sheet complex and preparation thereof

The present invention relates to a magnetic sheet composite which can be used in a local area network electronic device. And reduction in magnetic properties due to a non-magnetism material can be prevented by mounting a protection film and an adhesion layer on both sides of the magnetic sheet and dispersing magnetic powder inside the protection film and the adhesion layer.

Multifunctional particulate material, fluid, and composition

A multifunctional particulate material, fluid, or composition includes a predetermined amount of core particles with a plurality of coatings. The core particles have an average particle size of about 1 nm to 500 μm. The particulate material, fluid, or composition is capable of exhibiting one or more properties, such as magnetic, thermal, optical, electrical, biological, chemical, lubrication, and rheological.

Composite particle containing superparamagnetic iron oxide

The invention relates to a method for producing composite particles in which superparamagnetic iron oxide particles having a diameter of less than 30 nm are contained in a polysiloxane matrix comprising functional groups. The composite particles obtained by the method are suitable for magnetic separation methods.

Laminated coil component

　内部導体として安価な銅を用いることができ、かつ直流重畳特性に優れた積層コイル部品を提供する。　フェライト材料から構成される磁性体部と、非磁性フェライト材料から構成される非磁性体部と、それらの内部に埋設されたコイル状の銅を主成分とする導体部を有する積層コイル部品において、非磁性体部に、少なくともＦｅ、ＭｎおよびＺｎ、任意にＣｕを含有せしめ、Ｆｅの含有量をＦｅ ２ Ｏ ３ に換算して４０．０ｍｏｌ％以上４８．５ｍｏｌ％以下とし、Ｍｎの含有量をＭｎ ２ Ｏ ３ に換算して０．５ｍｏｌ％以上９ｍｏｌ％以下とし、Ｃｕの含有量をＣｕＯに換算して８ｍｏｌ％以下とする。

Magnetic load of telecommunications circuits, in particular circuits with coaxial conductors

Be used for magnetic microsphere based on fluorescent applications

提供了微球、微球群和用于形成微球的方法。一种被配置成呈现荧光和磁性特性的微球包括核微球和耦联于核微球表面的磁性材料。约50%或更少的核微球表面被磁性材料覆盖。该微球还包括包敷磁性材料和核微球的聚合物层。一种被配置成呈现荧光和磁性特性的微球群包括两个或多个的微球子集。两个或多个的微球子集被配置成呈现不同的荧光和/或磁性特性。两个或多个子集中的单独微球如上所述地配置。

Magnetic powders for use in hyperthermic treatments - e.g. of tumours, heated by hysteresis in alternating magnetic field

Magnetic powders (A) of particle size about 1 micron and contg. ions which are not toxic when introduced into the blood stream, are used in hyperthermic medical treatments. (A) are Fe203; Fe304; (Ni)1-x.(Zn)x.Fe204 (x is 0-0.8); (Ni)1-x-u.(Co)u.(Zn)x.Fe204(u is not defined) or (Mn)1-y.(Zn)y.Fe204 (y is 0-07). Pref. (A) has a Curie point close to the temp. at which necrosis of tissue occurs, and is esp. (Mn)0.33.(Zn)0.67.Fe204 (A'). Device for hyperthermic treatment comprises an arrangement for generating a low frequency, alternating magnetic field between the pole pieces of which the part of the body being treated can be placed. The body temp. is controlled by a sensor and a regulating system which controls the low frequency current used to generate the magnetic field. Method is esp. useful for treating tumours by selectively heating them to 41-43 deg.C. The method allows precise location and automatic regulation of the (hysteritic) heating effect.

Process Improvements for the Preparation of Iron Oxide

Patent FR2267354B1

ELECTRICALLY CONDUCTIVE ELEMENT

GLASSES AND VITROCERAMS SUITABLE FOR INDUCTION HEATING

L'invention se rapporte aux verres et yitrocérames. Elle concerne notamment des articles en verre dont la composition, en % en poids sur la base des oxydes, est choisie parmi les suivantes : a) 2 à 10 % de Na2 O et/ou de K2 O, 5 à 20 % de B2 O3, 25 à 40 % de FeO, 0 à 32 % d'Al2 O3 et 35 à 65 % de SiO2 ; et b) 1,5 à 6 % de Li2 O, 10 à 40 % de FeO, 10 à 20 % d'A12 O 3 , 45 à 66 % de SiO2 , 0 à 5 % de TiO2 et/ou de ZrO2 , et 0 à 5 % de B2 O3 , une proportion de B2 O3 d'au moins 1 % étant nécessaire lorsque la proportion de FeO est inférieure à 15 %, ainsi que des articles en vitrocérame obtenus à partir de ces articles en verre. Ces articles sont utiles pour fabriquer des ustensiles de cuisine, tels que des récipients, utilisables avec des cuisinières à chauffage par induction magnétique. The invention relates to glasses and yitrocerams. It relates in particular to glass articles of which the composition, in% by weight based on the oxides, is chosen from the following: a) 2 to 10% of Na2 O and / or of K2 O, 5 to 20% of B2 O3 , 25-40% FeO, 0-32% Al2 O3 and 35-65% SiO2; and b) 1.5 to 6% Li2 O, 10 to 40% FeO, 10 to 20% A12 O 3, 45 to 66% SiO2, 0 to 5% TiO2 and / or ZrO2, and 0 to 5% of B2 O3, a proportion of B2 O3 of at least 1% being necessary when the proportion of FeO is less than 15%, as well as glass-ceramic articles obtained from these glass articles. These articles are useful in making kitchen utensils, such as cookware, for use with magnetic induction heating cookers.

Magnetic grain boundary engineered ferrite core materials

복합 재료는 결정립 요소 및 나노 구조의 결정립계 요소를 포함할 수 있다. 복합 재료의 자화의 더 높은 연속성을 제공하기 위해 나노 구조의 결정립계 요소는 절연성 및 자성일 수 있다. 결정립 요소는 약 0.5 내지 50 마이크로미터의 평균 결정립 크기를 가질 수 있다. 결정립계 요소는 약 1 내지 100 나노미터의 평균 결정립 크기를 가질 수 있다. 나노 구조의 자성 결정립계 재료는 적어도 약 250 mT의 자속 밀도를 갖는다. 결정립 요소는 MnZn 페라이트 입자들을 포함할 수 있다. 나노 구조의 결정립계 요소는 NiZn 페라이트 나노입자들을 포함할 수 있다. 이들의 코어 요소들 및 시스템들은 복합 재료로부터 제조될 수 있다. The composite material may comprise grain elements of the grain elements and nanostructures. In order to provide higher continuity of magnetization of the composite material, the grain elements of the nanostructures may be insulating and magnetic. The grain elements may have an average grain size of about 0.5 to 50 micrometers. The grain elements may have an average grain size of about 1 to 100 nanometers. The nanostructured magnetic grain boundary material has a magnetic flux density of at least about 250 mT. The grain element may comprise MnZn ferrite particles. The grain elements of the nanostructures may comprise NiZn ferrite nanoparticles. These core elements and systems can be fabricated from composite materials.

Soft magnetic, high frequency dielectric composite material and process for its manufacture

Manufacture of fine ferrite powder

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Iron nitrides having improved electromagnetic properties and their manufacturing process

Method for coating composite soft magnetic material onto stator, and high-speed permanent magnet motor

A method for coating a composite soft magnetic material onto a stator, and a high-speed permanent magnet motor. The method comprises the following steps of: 1) preparation of mixed soft magnetic material powder; 2) preparing the mixed soft magnetic material powder obtained in step 1) into a coatable composite soft magnetic material coating (1); 3) coating the composite soft magnetic material coating (1) obtained in step 2) onto the surface of a core cavity of a high-speed permanent magnet motor stator (7); and 4) curing. The high-speed permanent magnet motor using the method can significantly reduce or fundamentally eliminate rotor eddy current heating of the high-speed permanent magnet motor, and effectively reduce vibration and noise of the high-speed permanent magnet motor.

High-impedance lean-iron manganese-zinc ferrite material and preparation method thereof

本发明涉及软磁铁氧体技术领域，为解决现有抗EMI技术所存在的高频下阻抗低、磁体电阻率低及居里温度低的问题，提供了一种高阻抗的贫铁锰锌铁氧体材料及其制备方法，所述高阻抗的贫铁锰锌铁氧体材料，其由主料和辅料制成，所述主料以摩尔百分比计由以下组分组成46.0～49.8mol％Fe 2 O 3 ，27.2～37.0mol％MnO，17.0～23.0mol％ZnO；以主料总重量计，所述辅料由以下质量百分含量的组分组成：0.03～0.1wt%Co 2 O 3 ，0.005～0.05wt%SnO 2 ，0.01～0.06wt%TiO 2 。本发明的MnZn铁氧体材料在室温下磁导率μi为2500±25%，在频率f处于1MHz~500MHZ条件下磁芯在25℃～120℃温度范围内有良好的高阻抗性能。

MAGNETIC PARTICLES

"partículas magnéticas". uma partícula magnética é divulgada. a partícula magnética compreende um material magnético tendo uma força de campo máxima em um intervalo de cerca de 20 emu/g a cerca de 250 emu/g e uma remanência em um intervalo de cerca de 0 emu/g a cerca de 30 emu/g. a partícula magnética compreende adicionalmente uma superfície externa contendo um ligante. o ligante interage com um analito de interesse na solução de amostra. "magnetic particles". a magnetic particle is released. the magnetic particle comprises a magnetic material having a maximum field strength in the range of about 20 emu / g to about 250 emu / g and a remnant in the range of about 0 emu / g to about 30 emu / g. the magnetic particle further comprises an outer surface containing a binder. the ligand interacts with an analyte of interest in the sample solution.

MAGNETIC PARTICLES WITH A CLOSED, ULTRA-THIN SILICATE LAYER, METHOD FOR THE PRODUCTION AND USE THEREOF

Coil device

本发明提供一种线圈装置(1)，其具有包含卷芯部(12)及设置于该卷芯部(12)的两端的凸缘部(14a、14a)的磁芯(10)、在卷芯部(12)卷绕电线(31、32)而成的线圈部(30)。具有连接电线端(31a、31b、32a、32b)的接线部(41)的电极膜(40)形成于凸缘部(14a、14a)的表面。在与形成于电极膜(40)的表面的与接线部(41)不同位置的端子安装部(42)连接有端子金属件(50)。根据本发明，可以提供安装部的连接可靠性高的线圈装置。

Preparation of finely divided ferrite powders

A process for the preparation of finely divided ferrites of the general formula MeFe.sub.2 O.sub.4 (I) where Me=aMn+bNi+cZn+dCo+eFe(II), and the atomic weight ratios a, b, c, d and e are each from 0 to 1 and their sum is 1, or M.sup.1.sub.2 Me.sup.1.sub.2 Fe.sub.12 O.sub.22 (II) where M 1 is barium, strontium, calcium and/or lead, and Me 1 is divalent manganese, copper, iron, cobalt, nickel, zinc, magnesium and/or equimolar amounts of lithium and trivalent iron, or M.sup.2 (Me.sup.2 Ti).sub.x Fe.sub.12-2x O.sub.19 (III) where M 2 is barium or strontium, Me 2 is zinc, nickel and/or cobalt and x is from 0 to 2.0, wherein the salts required for the particular composition are mixed with sodium carbonate and/or potassium carbonate, the mixture obtained is heated at 700° to 1200° C., and the resulting ferrite is then isolated by leaching with water.

Ferrite materials and electronic components

A kind of high magnetic permeability lower losses ferrite material and preparation method thereof

本发明涉及一种高磁导率低功耗铁氧体材料及其制备方法，本发明提供的工艺包括步骤：将原材料三氧化二铁、四氧化三锰和氧化锌按70.0‑70.5wt％，22‑23wt％，6.5‑7.5wt％的比例进行混合研磨；然后进行预烧得到预烧料，控制预烧为温度和预烧流量；将预烧料研磨进行粗粉碎，控制粒径；将粗粉碎料、微量添加剂、去离子水、分散剂和消泡剂进行细粉碎和制浆得到预制浆料，最后加入聚乙烯醇混合均匀后，将所得料浆喷雾造粒干燥，冷去至室温，控制含水率。通过上述技术方案本发明使常规的低功耗料粉磁导率达到2600以上，从而使采用该料粉生产的电感式磁芯能在寒冷地区不受温度影响，正常启动。同时便于磨削工序的生产(无需反复精磨，通过提升磁芯表面光洁度来提高电感值)。

Magnetic toners

MAGNETIC TONERS Abstract The present invention relates to magnetic toners and processes for producing them. The toner materials that are produced have the color of the magnetic material substantially obscured while still maintaining the high percentages of magnetic materials necessary for many types of magnetic printing processes. Further, the toners may be provided with a desired shade or color with dyes or pigments. The process of production preferably involves the coating of the individual magnetic particles with low-density essentially opaque polymeric particulate material having an affinity for the magnetic particles, thereby obscuring the color of said magnetic particles. The resulting coated particles may be intermixed with dyes, pigments, binders and other material as desired to produce toners which are useful for a variety of purposes, including multi-color reproduction techniques.