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11531results about "Inorganic material magnetism" patented technology

Multifunctional polymer coated magnetic nanocomposite materials

A polymer coated nanoparticle containing a metallic core and a polymer shell encapsulating said metallic core is useful, for example, in magnetic tapes and supercapacitors.
Owner:THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIV OF ARIZONA

Surface modified particulate and sintered or injection molded products

Disclosed are interfacially modified particulate and polymer composite material for use in injection molding processes, such as metal injection molding and additive process such as 3D printing. The composite material is uniquely adapted for powder metallurgy processes. Improved products are provided under process conditions through surface modified powders that are produced by extrusion, injection molding, additive processes such as 3D printing, Press and Sinter, or rapid prototyping.
Owner:TUNDRA COMPOSITES LLC

Mobile communication terminal

InactiveUS20070241971A1Easily and inexpensively integrationIncrease freedomAntenna supports/mountingsAntenna connectorsEngineeringAntenna element
An antenna element made of an electrically conductive material pattern is printed and formed on a face of a casing made of an electrically nonconductive material having a circuit board housed therein, and the antenna element and the circuit board are electrically connected to each other by a connecting element.
Owner:TOSHIBA CLIENT SOLUTIONS CO LTD

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.
Owner:LUMINEX

Magnetically-responsive microspheres

Microspheres are constructed using magnetic particles. Hybrid microspheres are constructed using fluorescent or luminescent microspheres and magnetic nanoparticles. Reactive moieties on the surface of the resultant particles can be used for attachment of biologically active molecules, thus allowing selective separations and analytical assays to be performed. Distinguishable subsets of microspheres can be constructed based on fluorescent intensities, and separations can be affected based on variable degree of magnetic content.
Owner:LUMINEX

Magnetic alloy material and method of making the magnetic alloy material

A magnetic alloy material according to the present invention has a composition represented by Fe100-a-b-cREaAbCoc, where RE is a rare-earth element always including La, A is either Si or Al, 6 at %≦a≦11 at %, 8 at %≦b≦18 at %, and 0 at %≦c≦9 at %, and has either a two phase structure consisting essentially of an α-Fe phase and an (RE, Fe, A) phase including 30 at % to 90 at % of RE or a three phase structure consisting essentially of the α-Fe phase, the (RE, Fe, A) phase including 30 at % to 90 at % of RE and an RE(Fe, A)13 compound phase with an NaZn13-type crystal structure. The respective phases have an average minor-axis size of 40 nm to 2 μm.
Owner:HITACHI METALS LTD

Hexagonal barium ferrite magnetic particle and method of manufacturing the same, and magnetic recording medium

An aspect of the present invention relates to a hexagonal barium ferrite magnetic particle, wherein, relative to 100 atom percent of a Fe content, an Al content ranges from 1.5 to 15 atom percent, a combined content of a divalent element and a pentavalent element ranges from 1.0 to 10 atom percent, an atomic ratio of a content of the divalent element to a content of the pentavalent element is greater than 2.0 but less than 4.0, and an activation volume ranges from 1,300 to 1,800 nm3.
Owner:FUJIFILM CORP

Iron nitride magnetic powder and magnetic recording medium comprising the same

InactiveUS20100035086A1Magnetic interactionIncreasing magnetic interactionRecord information storageInorganic material magnetismIron nitrideYttrium
A spherical or ellipsoidal iron nitride magnetic powder having a core comprising iron nitride including a Fe16N2 phase as a primary phase and an outer layer containing yttrium (Y) and aluminum (Al), in which an average particle size r of the iron nitride magnetic powder is 20 nm or less, an average diameter d of the core is 4 to 10 nm, and a ratio of r to d (r / d) is 2 to 3, and average content of yttrium and aluminum in the outer layer are from 0.9 to 5 atomic % and from 30 to 50 atomic %, respectively, each based on the total number of iron atoms in the iron nitride magnetic powder, and standard deviations of the contents of yttrium and aluminum are 0.6 atomic % or less and 17 atomic % or less, respectively.
Owner:HITACHT MAXELL LTD

Soft magnetic sheet, module including the sheet and non-contact power transmission system including the module

A non-contact power transmission system comprises a power receiver and a power transmitter. The power transmitter includes a transmitter coil. The power receiver includes a module which comprises a coil sheet and a soft magnetic sheet stacked on the coil sheet. The coil sheet includes a receiver coil. Electric power is transmitted from the transmitter coil to the receiver coil. The soft magnetic sheet comprises a pair of insulation films and a soft magnetic member hermetically interposed between the insulation films.
Owner:TOKIN CORP

Method of manufacturing hexagonal ferrite magnetic powder, magnetic recording medium and method of manufacturing the same

An aspect of the present invention relates to a method of manufacturing hexagonal ferrite magnetic powder. The method of manufacturing hexagonal ferrite magnetic powder comprises wet processing hexagonal ferrite magnetic particles obtained following acid treatment in a water-based solvent to prepare an aqueous magnetic liquid satisfying relation (1) relative to an isoelectric point of the hexagonal ferrite magnetic particles: pH0−pH*≧2.5, wherein, pH0 denotes the isoelectric point of the hexagonal ferrite magnetic particles and pH* denotes a pH of the aqueous magnetic liquid, which is a value of equal to or greater than 2.0, adding a surface-modifying agent comprising an alkyl group and a functional group that becomes an anionic group in the aqueous magnetic liquid to the aqueous magnetic liquid to subject the hexagonal ferrite magnetic particles to a surface-modifying treatment, and removing the water-based solvent following the surface-modifying treatment to obtain hexagonal ferrite magnetic particles.
Owner:FUJIFILM CORP

Non-Oriented Electrical Steel Sheet and Production Process Thereof

A main object thereof is to provide a non-oriented electrical steel sheet being excellent in surface characteristics and having both excellent mechanical characteristics and magnetic characteristics necessary for a rotor of rotating machines such as motors and generators which rotate at a high speed, and a method for producing the same. To achieve the object, the present invention provides a non-oriented electrical steel sheet comprising in % by mass: 0.06% or less of C; 3.5% or less of Si; from 0.05% or more to 3.0% or less of Mn; 2.5% or less of Al; 0.30% or less of P; 0.04% or less of S; 0.02% or less of N; at least one element selected from the group consisting of Nb, Ti, Zr and Vin the predetermined range; and a balance consisting of Fe and impurities; and having a recrystallized fraction being less than 90%.
Owner:NIPPON STEEL CORP

Crystalline composition, wafer, and semi-conductor structure

A crystalline composition is provided. The crystalline composition may include gallium and nitrogen; and the crystalline composition may have an infrared absorption peak at about 3175 cm−1, with an absorbance per unit thickness of greater than about 0.01 cm−1.
Owner:SLT TECH

Magnetic tape

The magnetic tape includes a magnetic layer containing ferromagnetic hexagonal ferrite powder, abrasive, and binder on a nonmagnetic support, wherein the ferromagnetic hexagonal ferrite powder exhibits an activation volume of less than or equal to 1,800 nm3, and inclination, cos θ, of the ferromagnetic hexagonal ferrite powder relative to a surface of the magnetic layer as determined by sectional observation by a scanning electron transmission microscope is greater than or equal to 0.85 but less than or equal to 1.00.
Owner:FUJIFILM CORP

Flux concentrator and method of making a magnetic flux concentrator

A flux concentrator and method for manufacturing a flux concentrator is provided. The method can include combining powdered soft magnetic material, a binder, a solvent, a internal lubricant; mixing the materials to create a mixture, evaporating the solvent from the mixture, molding the mixture to form a flux concentrator, and curing the flux concentrator. The flux concentrator may be laminated and broken into multiple pieces, which makes the flux concentrator more flexible. Breaking the flux concentrator does not significantly affect the magnetic properties. Since the permeability of the binder is very similar to that of air, adding tiny air gaps between the fractions is not significantly different than adding more binder.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD

Planar coil element and method for producing the same

In a planar coil element and a method for producing the same, a metal magnetic powder-containing resin containing an oblate or needle-like first metal magnetic powder contains a second metal magnetic powder having an average particle size (1 μm) smaller than that (32 μm) of the first metal magnetic powder, which significantly reduces the viscosity of the metal magnetic powder-containing resin. Therefore, the metal magnetic powder-containing resin is easy to handle when applied to enclose a coil unit, which makes it easy to produce the planar coil element.
Owner:TDK CORPARATION

Magnetic tape and magnetic tape device

The magnetic tape includes a magnetic layer having ferromagnetic powder and a binder on a non-magnetic support, in which the magnetic layer includes a timing-based servo pattern, the ferromagnetic powder is ferromagnetic hexagonal ferrite powder having an activation volume equal to or smaller than 1,600 nm3, and an edge shape of the timing-based servo pattern specified by a magnetic force microscope observation is a shape in which a difference (l99.9−l0.1) between a value l99.9 of a cumulative frequency function of 99.9% of a position deviation width from an ideal shape in a longitudinal direction of the magnetic tape and a value l0.1 of the cumulative frequency function of 0.1% thereof is equal to or smaller than 180 nm.
Owner:FUJIFILM CORP

Anodizing Aluminum and Alloys Thereof

InactiveUS20080274375A1AnodisationCellsOxalateAnodizing
This invention encompasses methods of producing a colored oxide layer on an aluminum material by anodizing the aluminum material in an electrolyte comprising water, sulfuric acid and oxalic acid. The anodizing step comprises passing at least two sequential current densities through the electrolyte. Methods of making and using article with a colored oxide layer on an aluminum material make by the methods disclosed herein are also disclosed.
Owner:DURACOUCHE INT

Hexagonal ferrite magnetic particles, magnetic recording powder, and magnetic recording medium

Hexagonal ferrite magnetic particles have an activation volume ranging from 1,000 nm3 to 1,500 nm3, and ΔE10% / kT, thermal stability at 10% magnetization reversal, is equal to or greater than 40.
Owner:FUJIFILM CORP

Magnetic recording medium and coating composition for magnetic recording medium

The magnetic recording medium comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, and further comprises a compound denoted by Formula (1):wherein, in Formula (1), X denotes —O—, —S—, or NR1—; each of R and R1 independently denotes a hydrogen atom or a monovalent substituent; L denotes a divalent connecting group; Z denotes a partial structure of valence n comprising at least one group selected from the group consisting of carboxyl groups and carboxylate groups; m denotes an integer of greater than or equal to 2, and n denotes an integer of greater than or equal to 1.
Owner:FUJIFILM CORP

Power receiving device, and electronic apparatus and non-contact charger using the same

Disclosed is an electronic apparatus (1) comprising a power receiving device (2) and an electronic apparatus main body (3). The power receiving device (2) comprises a power receiving coil (11) having a spiral coil, a rectifier (12) and a secondary battery (13). The electronic apparatus main body (3) comprises an electronic device (14) and a circuit board (15). A magnetic foil (16) is arranged in at least one position between the spiral coil (11) and the secondary battery (13), the rectifier (12), the electronic device (14) or the circuit board (15). The magnetic foil (16) has a value expressed as the product of the saturation flux density MS and the thickness t, namely Ms·t, of not less than 15.
Owner:KK TOSHIBA +1

Insulating magnectic metal particles and method for manufacturing insulating magnetic material

An insulating magnetic metal particle includes a magnetic metal particle containing at least one metal selected from the group consisting of Co, Fe, and Ni and having a diameter of 5 to 500 nm, a first inorganic insulating layer made of an oxide that covers the surface of the magnetic metal particle, and a second inorganic insulating layer made of an oxide that produces a eutectic crystal by reacting together with the first inorganic insulating layer at the time of heating them, the second inorganic insulating layer being coated on the first inorganic insulating layer. A thickness ratio of the second inorganic insulating layer with respect to the first inorganic insulating layer is set so that the first inorganic insulating layer remains on the surface of the magnetic metal particle after producing the eutectic crystal.
Owner:KK TOSHIBA
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