Hono
Kazuhiro Hono, Ibaraki JP
Patent application number | Description | Published |
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20100278682 | SINTERED BINARY ALUMINUM ALLOY POWDER SINTERED MATERIAL AND METHOD FOR PRODUCTION THEREOF - Disclosed is a binary aluminum alloy powder sintered material which comprises aluminum and iron, which has a completely crystalline microstructure comprising an aluminum matrix and an α-Al phase and at least any one phase of an Al | 11-04-2010 |
20120091548 | FERROMAGNETIC TUNNEL JUNCTION STRUCTURE, AND MAGNETO-RESISTIVE ELEMENT AND SPINTRONICS DEVICE EACH USING SAME - Disclosed is a ferromagnetic tunnel junction structure which is characterized by having a tunnel barrier layer that comprises a non-magnetic material having a spinel structure. The ferromagnetic tunnel junction structure is also characterized in that the non-magnetic material is substantially MgAl | 04-19-2012 |
20130040167 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND ITS MANUFACTURING METHOD - It is aimed to provide a perpendicular magnetic recording medium capable of dealing with an ultra-higher recording density than before and its manufacturing method. | 02-14-2013 |
20130068992 | METHOD FOR PRODUCING RARE EARTH PERMANENT MAGNETS, AND RARE EARTH PERMANENT MAGNETS - An R-T-B based permanent magnet powder, which has been made by an HDDR process and which has an average crystal grain size of 0.1 μm to 1 μm and a crystal grain aspect ratio (ratio of the major axis size to the minor axis size) of 2 or less, is provided (Step (A)). R is a rare-earth element, of which at least 95 at % is Nd and/or Pr, and T is either Fe alone or Fe partially replaced with Co and/or Ni and is a transition metal element, of which at least 50 at % is Fe. Meanwhile, an R′—Cu based alloy powder, which is made up of R′ and Cu, which accounts for 2 at % to 50 at % of the alloy powder, is also provided (Step (B)). R′ is a rare-earth element, of which at least 90 at % is Nd and/or Pr but which includes neither Dy nor Tb. The R-T-B based permanent magnet powder and the R′—Cu based alloy powder are mixed together to obtain a mixed powder (Step (C)). And then the mixed powder is subjected to a heat treatment process at a temperature of 500° C. to 900° C. in either an inert ambient gas or a vacuum (Step (D)). | 03-21-2013 |
Kazuhiro Hono, Tsukuba-Shi JP
Patent application number | Description | Published |
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20130302649 | CO2FE-BASED HEUSLER ALLOY AND SPINTRONICS DEVICES USING THE SAME - [Problem to be Solved] | 11-14-2013 |
20150008998 | RARE-EARTH NANOCOMPOSITE MAGNET - The invention provides a nanocomposite magnet, which has achieved high coercive force and high residual magnetization. The magnet is a non-ferromagnetic phase that is intercalated between a hard magnetic phase with a rare-earth magnet composition and a soft magnetic phase, wherein the non-ferromagnetic phase reacts with neither the hard nor soft magnetic phase. A hard magnetic phase contains Nd | 01-08-2015 |
Kazuhiro Hono, Ibaraki-Ken JP
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20130221461 | Ferromagnetic Tunnel Junction Structure and Magnetoresistive Effect Device and Spintronics Device Utilizing Same - A ferromagnetic tunnel junction structure comprising a first ferromagnetic layer, a second ferromagnetic layer, and a tunnel barrier layer that is interposed between the first ferromagnetic layer and the second ferromagnetic layer, wherein the tunnel barrier layer includes a crystalline non-magnetic material having constituent elements that are similar to those of an crystalline oxide that has spinel structure as a stable phase structure; the non-magnetic material has a cubic structure having a symmetry of space group Fm-3m or F-43m in which atomic arrangement in the spinel structure is disordered; and an effective lattice constant of the cubic structure is substantially half of the lattice constant of the oxide of the spinel structure. | 08-29-2013 |
Kazuhiro Hono, Tsukuba JP
Patent application number | Description | Published |
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20140335376 | ELECTRICALLY CONDUCTIVE UNDERLAYER TO GROW FEPT GRANULAR MEDIA WITH (001) TEXTURE ON GLASS SUBSTRATES - A perpendicular magnetic recording medium, comprising: a substrate; a buffer layer deposited in a first orientation on top of the substrate; an underlayer deposited in a second orientation on top of the buffer layer, the underlayer comprising an electrically conductive oxide; and a magnetic recording layer deposited on top of the underlayer and having an axis of magnetic anisotropy substantially perpendicular to the surface thereof. | 11-13-2014 |