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    PERPENDICULAR MAGNETIC RECORDING MEDIUM AND ITS MANUFACTURING METHOD
    3.
    发明申请
    PERPENDICULAR MAGNETIC RECORDING MEDIUM AND ITS MANUFACTURING METHOD 审中-公开
    全能磁记录介质及其制造方法

    公开(公告)号：US20130040167A1

    公开(公告)日：2013-02-14

    申请号：US13522261

    申请日：2011-01-12

    申请人： Perumal Alagarsamy ,  Yukiko Takahashi ,  Kazuhiro Hono ,  Tomoko Seki

    发明人： Perumal Alagarsamy ,  Yukiko Takahashi ,  Kazuhiro Hono ,  Tomoko Seki

    IPC分类号： G11B5/738 ,  G11B5/851 ,  G11B5/667

    CPC分类号： G11B5/851 ,  G11B5/653 ,  G11B5/7379

    摘要： 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.The present invention concerns a perpendicular magnetic recording medium including at least a seed layer made of noncrystalline ceramic, a crystalline orientation control layer and a magnetic layer made of a material mainly containing a FePt alloy in this order on a substrate. This perpendicular magnetic recording medium is suitably manufactured by forming at least the seed layer, the orientation control layer and the magnetic layer made of the material mainly containing the FePt alloy in this order on the substrate by sputtering, wherein the magnetic layer is formed at a predetermined temperature of 500° C. or less.

    摘要翻译： 旨在提供一种能够处理超过以前的超高记录密度的垂直磁记录介质及其制造方法。 本发明涉及一种垂直磁记录介质，其至少包括由非晶体陶瓷制成的晶种层，晶体取向控制层和由主要包含FePt合金的材料制成的磁性层，所述材料依次在基板上。 这种垂直磁记录介质通过溅射在基板上至少形成由主要含有FePt合金的材料制成的晶种层，取向控制层和磁性层，其中磁性层形成在 预定温度为500℃以下。

    RARE-EARTH NANOCOMPOSITE MAGNET
    5.
    发明申请
    RARE-EARTH NANOCOMPOSITE MAGNET 有权
    稀土纳米复合磁体

    公开(公告)号：US20150008998A1

    公开(公告)日：2015-01-08

    申请号：US14368541

    申请日：2012-12-27

    申请人： Hidefumi Kishimoto ,  Noritsugu Sakuma ,  Masao Yano ,  Weibin Cui ,  Yukiko Takahashi ,  Kazuhiro Hono

    发明人： Hidefumi Kishimoto ,  Noritsugu Sakuma ,  Masao Yano ,  Weibin Cui ,  Yukiko Takahashi ,  Kazuhiro Hono

    IPC分类号： H01F7/02 ,  H01F1/03

    CPC分类号： H01F7/02 ,  C22C38/005 ,  H01F1/0311 ,  H01F10/126

    摘要： 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 Nd2Fe14B, a soft magnetic phase contains Fe or Fe2Co, and a non-ferromagnetic phase contains Ta. The thickness of the non-ferromagnetic phase containing Ta is 5 nm or less, and the thickness of the soft magnetic phase containing Fe or Fe2Co is 20 nm or less. Nd, or Pr, or an alloy of Nd and any one of Cu, Ag, Al, Ga, and Pr, or an alloy of Pr and any one of Cu, Ag, Al, and Ga is diffused into a grain boundary phase of the hard magnetic phase of Nd2Fe14B.

    摘要翻译： 本发明提供一种纳米复合磁体，其具有高的矫顽力和高剩余磁化强度。 磁体是插入硬磁相与稀土磁体组合物和软磁相之间的非铁磁相，其中非铁磁相与硬磁相和软磁相都不起作用。 硬磁相包含Nd2Fe14B，软磁相含有Fe或Fe2Co，非铁磁相含有Ta。 含有Ta的非铁磁相的厚度为5nm以下，含有Fe或Fe2Co的软磁性相的厚度为20nm以下。 Nd，Pr或Nd，Cu，Ag，Al，Ga和Pr中的任一种的合金，或Pr，Cu，Ag，Al，Ga中的任一种的合金，扩散到 Nd2Fe14B的硬磁相。

    METHOD FOR PRODUCING RARE EARTH PERMANENT MAGNETS, AND RARE EARTH PERMANENT MAGNETS
    6.
    发明申请
    METHOD FOR PRODUCING RARE EARTH PERMANENT MAGNETS, AND RARE EARTH PERMANENT MAGNETS 审中-公开
    生产稀土永磁体的方法和稀土永磁体

    公开(公告)号：US20130068992A1

    公开(公告)日：2013-03-21

    申请号：US13698748

    申请日：2011-05-19

    申请人： Kazuhiro Hono ,  Tadakatsu Ohkubo ,  Hossein Sepehri Amin ,  Noriyuki Nozawa ,  Takeshi Nishiuchi ,  Satoshi Hirosawa

    发明人： Kazuhiro Hono ,  Tadakatsu Ohkubo ,  Hossein Sepehri Amin ,  Noriyuki Nozawa ,  Takeshi Nishiuchi ,  Satoshi Hirosawa

    IPC分类号： H01F1/01

    CPC分类号： C22C33/0278 ,  B22F2998/10 ,  C21D6/00 ,  C22C38/005 ,  H01F1/0573 ,  H01F41/0266 ,  H01F41/0293 ,  B22F3/02 ,  B22F3/1017 ,  B22F3/14

    摘要： 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)).

    摘要翻译： 通过HDDR法制造的平均晶粒尺寸为0.1μm〜1μm，晶粒长宽比（长轴尺寸与短轴尺寸的比）为2的RTB型永久磁铁粉末 （步骤（A））。 R是稀土元素，其中至少95原子％是Nd和/或Pr，T是单独的Fe或Fe部分被Co和/或Ni代替，并且是过渡金属元素，其中至少50 at％是Fe。 同时，还提供由R'和Cu组成的R'-Cu基合金粉末，其占合金粉末的2at％至50at％（步骤（B））。 R'是稀土元素，其中至少90原子％是Nd和/或Pr，但不包括Dy和Tb。 将R-T-B系永久磁铁粉末和R'-Cu系合金粉末混合，得到混合粉末（工序（C））。 然后将混合粉末在惰性环境气体或真空中在500℃至900℃的温度下进行热处理（步骤（D））。

    Ferromagnetic tunnel junction structure, and magneto-resistive element and spintronics device each using same
    8.
    发明授权
    Ferromagnetic tunnel junction structure, and magneto-resistive element and spintronics device each using same 有权
    铁磁隧道结结构，以及磁阻元件和自旋电子器件，每个使用相同的

    公开(公告)号：US08575674B2

    公开(公告)日：2013-11-05

    申请号：US13264460

    申请日：2010-04-15

    申请人： Hiroaki Sukegawa ,  Koichiro Inomata ,  Rong Shan ,  Masaya Kodzuka ,  Kazuhiro Hono ,  Takao Furubayashi ,  Wenhong Wang

    发明人： Hiroaki Sukegawa ,  Koichiro Inomata ,  Rong Shan ,  Masaya Kodzuka ,  Kazuhiro Hono ,  Takao Furubayashi ,  Wenhong Wang

    IPC分类号： H01L29/76

    CPC分类号： H01L43/08 ,  B82Y10/00 ,  B82Y25/00 ,  B82Y40/00 ,  G01R33/098 ,  G11B5/3906 ,  G11B5/3909 ,  G11C11/161 ,  H01F10/1936 ,  H01F10/3254 ,  H01F41/307 ,  H01L43/10

    摘要： 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 MgAl2O4. The ferromagnetic tunnel junction is also characterized in that at least one of the ferromagnetic layers comprises a Co-based full Heusler alloy having an L21 or B2 structure. The ferromagnetic tunnel junction structure is also characterized in that the Co-based full Heusler alloy comprises a substance represented by the following formula: Co2FeAlxSi1-x (0≦x≦1). Also disclosed are a magnetoresistive element and a spintronics device, each of which utilizes the ferromagnetic tunnel junction structure and can achieve a high TMR value, that cannot be achieved by employing conventional tunnel barrier layers other than a MgO barrier.

    摘要翻译： 公开了一种铁磁隧道结结构，其特征在于具有隧道势垒层，其包括具有尖晶石结构的非磁性材料。 铁磁隧道结结构的特征还在于非磁性材料基本上是MgAl 2 O 4。 铁磁隧道结的特征还在于至少一个铁磁层包括具有L21或B2结构的Co基全Heusler合金。 铁磁隧道结结构的特征还在于，基于Co的全Heusler合金包含由下式表示的物质：Co 2 FeAl x Si 1-x（0 @ x @ 1）。 还公开了一种磁阻元件和自旋电子学器件，其中每一个都利用铁磁隧道结结构并且可以实现高TMR值，这不能通过使用除MgO阻挡层之外的常规隧道势垒层来实现。

    Magnesium Alloy Exhibiting High Strength and High Ductility and Method for Production Thereof
    9.
    发明申请
    Magnesium Alloy Exhibiting High Strength and High Ductility and Method for Production Thereof 有权
    镁合金高强度高延性及其生产方法

    公开(公告)号：US20080017285A1

    公开(公告)日：2008-01-24

    申请号：US11631373

    申请日：2005-06-28

    申请人： Toshiji Mukai ,  Kazuhiro Hono ,  Hidetoshi Somekawa ,  Tomoyuki Honma

    发明人： Toshiji Mukai ,  Kazuhiro Hono ,  Hidetoshi Somekawa ,  Tomoyuki Honma

    IPC分类号： C22F1/06

    CPC分类号： C22F1/06 ,  C22C23/00 ,  C22C23/04 ,  C22C23/06

    摘要： A magnesium alloy exhibiting high strength and high ductility, characterized in that it comprises 0.03 to 0.54 atomic % of certain solute atoms belonging to 2 Group, 3 Group or Lanthanoids of the Periodic Table and having an atomic radius larger than that of magnesium and the balanced amount of magnesium, and has a fine crystal grain structure wherein solute atoms having an average crystal grain diameter of 1.5 μm or less and being unevenly present in the vicinity of crystal grain boundaries at a concentration being 1.5 to 10 times that within crystal grains, wherein an atom selected from the group consisting of Ca, Sr, Ba, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb and Lu can be used as the above solute atom; and a method for producing the magnesium alloy. The above magnesium alloy is novel and achieves high strength and high ductility at the same time.

    摘要翻译： 表现出高强度，高延展性的镁合金，其特征在于，其含有属于2族，3族或周期表镧系元素的某些固体原子的0.03〜0.54原子％，其原子半径大于镁的原子半径，平衡 并且具有细晶粒结构，其中溶质原子的平均晶粒直径为1.5μm或更小，并且在晶粒边界附近不均匀地存在于晶粒内的浓度的1.5至10倍，其中 可以使用选自Ca，Sr，Ba，Sc，Y，La，Ce，Pr，Nd，Pm，Sm，Eu，Gd，Th，Dy，Ho，Er，Tm，Yb和Lu中的原子 如上述溶质原子; 镁合金的制造方法。 上述镁合金是新颖的，同时实现高强度和高延展性。