A ferromagnetic-polymer composite material comprises a polymer and a plurality of ferromagnetic film platelets disposed in the polymer. Each ferromagnetic film platelet comprises first and second insulator layers and a ferromagnetic layer disposed between the first and second insulator layers. The ferromagnetic layer can be magnetically anisotropic in which a hard axis of magnetization is aligned parallel to a plane that passes through and parallel to an interface between the first insulator layer and the ferromagnetic layer. The easy and/or hard axes of magnetization in the ferromagnetic film platelets can be aligned. An inductor can have a core formed of the ferromagnetic-polymer composite material.

The present invention concerns a structure or device comprising a rare earth nitride material, and a removable capping for passivating the rare earth nitride material.

A magnetizable abrasive particle comprises a ceramic body having an outer surface and a magnetizable layer disposed on a portion, but not the entirety, of the outer surface. The ceramic body comprises a platelet having two opposed major facets connected to each other by a plurality of side facets. The magnetizable layer completely covers one of the two opposed major facets, and the magnetizable layer has a magnetic dipole oriented perpendicular or parallel to the facet which it completely covers. A plurality of the magnetizable abrasive particles, and abrasive articles including them are also disclosed. Methods of making the foregoing are also disclosed.

A solenoid pipe is formed of a ferromagnetic material containing 15-18 mass % of Cr, an electromagnetic coil, and a valve body. The pipe includes a reform portion, having a composition in which a component of the ferromagnetic material is mixed with a component of a Ni-containing material. A ratio, e/d, of a maximum deformation, e, of an outer circumferential surface side of the reform portion of the pipe with respect to a thickness, d, of the pipe near the reform portion is 0.5 or less, and a ratio, c/d, of a maximum deformation, c, of an inner circumferential surface side of the reform portion of the pipe with respect to the thickness, d, of the pipe is 0.5 or less.

A composite magnetic material includes a soft magnetic phase including a magnetic material containing a ferromagnetic material including Fe or Co as a main component and a plurality of hard magnetic particles present and dispersed in a form of islands in the soft magnetic phase. The hard magnetic particles have an average particle size of 2 nm or more and include a magnetic material containing a ferrimagnetic material or an antiferromagnetic material as a main component while they are present with an average inter-particle distance of 100 nm or less in the soft magnetic phase. The composite magnetic material has excellent magnetic properties and can be made into a lightweight magnet to be used e.g. in a motor of an aircraft.

The present invention concerns a structure or device comprising a rare earth nitride material, and a removable capping for passivating the rare earth nitride material.

A multi-layered structure is provided, which includes a carrier and a resin coating on the carrier, wherein the resin coating is formed by magnetically aligning and drying a resin composition. The resin composition includes 1 part by weight of (a) crosslinkable monomer with a biphenyl group, 1.0 to 20.0 parts by weight of (b) polyphenylene oxide, 0.1 to 10.0 parts by weight of (c) hardener, and 0.1 to 80.0 parts by weight of (d) magnetic filler. (d) Magnetic filler is boron nitride, aluminum nitride, silicon nitride, silicon carbide, aluminum oxide, carbon nitride, octahedral carbon, or a combination thereof, with a surface modified by iron-containing oxide. (d) Magnetic filler is sheet-shaped or needle-shaped.

In various embodiments magnetically actuated liquid crystals are provided as well as method of manufacturing such, methods of using the liquid crystals and devices incorporating the liquid crystals. In one non-limiting embodiment the liquid crystals comprise Fe.sub.3O.sub.4 nanorods where the nanorods are coated with a silica coating.

Provided is a composite member including: an inorganic matrix part made from an inorganic substance that includes at least one of a metal oxide or a metal oxide hydroxide as a main component, contains substantially no single metal and alloy, and is a diamagnetic substance or a paramagnetic substance; and a ferromagnetic material part that is present inside the inorganic matrix part, directly bonds with the inorganic substance making up the inorganic matrix part, and is made from a ferromagnetic substance. In the inorganic matrix part, particles of the inorganic substance are continuously present, and the inorganic matrix part has a larger volume ratio than that of the ferromagnetic material part.

An electronic device is provided. The electronic device includes a housing including at least one receiving hole exposed to an outside, a magnet disposed inside the housing and adjacent to the at least one receiving hole, an input module configured to be insertable into the at least one receiving hole and including a ferrite core configured to block or redirect part of a magnetic field generated from the magnet, a sensor unit disposed inside the housing and configured to sense the magnetic field generated from the magnet, and a controller configured to sense whether the input module is inserted into the at least one receiving hole by a signal according to a strength of the magnetic field sensed by the sensor unit.