公开(公告)号：US5365212A

公开(公告)日：1994-11-15

申请号：US100427

申请日：1993-08-02

申请人： Yoshiaki Saito ,  Koichiro Inomata ,  Shiho Okuno ,  Yoshinori Takahashi

发明人： Yoshiaki Saito ,  Koichiro Inomata ,  Shiho Okuno ,  Yoshinori Takahashi

IPC分类号： G01R33/09 ,  G11B5/39 ,  H01F10/30 ,  H01L43/08 ,  H01L43/10 ,  H01L43/00

CPC分类号： H01L43/10

摘要： A magnetoresistance effect element includes a multilayer in which magnetic layers, mixture layers each constituted by a mixture of a ferromagnetic element and a non-ferromagnetic element, and nonmagnetic layers are stacked on each other so as to exhibit a magnetoresistance effect. In this element, each of the mixture layers is interposed between the magnetic layer and the nonmagnetic layer, and 2 (X.sub.1 /X.sub.n)/n is larger than 1.1 where n is the number of atomic layers of the mixture layer, X.sub.1 is the atomic concentration (%) of the ferromagnetic element of an atomic layer closest to the magnetic layer, and X.sub.n is the atomic concentration (%) of the ferromagnetic element of an n-th atomic layer closest to the nonmagnetic layer.

摘要翻译： 磁阻效应元件包括多层，其中磁性层，各自由铁磁性元件和非铁磁性元件的混合物构成的混合层和非磁性层彼此堆叠以呈现磁阻效应。 在该元件中，每个混合层插入在磁性层和非磁性层之间，2（X1 / Xn）/ n大于1.1，其中n是混合层的原子层数，X1是原子 最靠近磁性层的原子层的铁磁性元素的浓度（％），Xn是最靠近非磁性层的第n原子层的铁磁性元素的原子浓度（％）。

公开(公告)号：US20120091548A1

公开(公告)日：2012-04-19

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： H01L29/82 ,  H01L21/02

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：Co2FeAlxSi1-x（0＆nlE; x＆nlE; 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。

公开(公告)号：US20090015969A1

公开(公告)日：2009-01-15

申请号：US10589283

申请日：2005-02-08

申请人： Ryosuke Kainuma ,  Koichiro Inomata ,  Kiyohito Ishida

发明人： Ryosuke Kainuma ,  Koichiro Inomata ,  Kiyohito Ishida

IPC分类号： G11B5/33 ,  H01F1/00

CPC分类号： H01F10/16 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3906 ,  G11B5/3909 ,  G11C11/161 ,  H01F10/324 ,  H01F10/3254 ,  H01L43/10 ,  Y10T428/1114

摘要： Magnetic thin film having high spin polarizability and a magnetoresistance effect device and a magnetic device using the same, provided with a substrate (2) and Co2MGa1-xAlx thin film (3) formed on the substrate (2), the Co2MGa1-xAlx thin film (3) has a L21 or B2 single phase structure, M of the thin film is either one or two or more of Ti, V, Mo, W, Cr, Mn, and Fe, an average valence electron concentration Z in M is 5.5≦Z≦7.5, and 0≦x≦0.7, shows ferromagnetism at room temperature, and can attain high spin polarizability. A buffer layer (4) may be inserted between the substrate (2) and the Co2FexCr1-xAl thin film (3). The tunnel magnetoresistance effect device and the giant magnetoresistance effect device using this magnetic thin film can attain large TMR and GMR at room temperature under the low magnetic field.

摘要翻译： 具有高自旋极化性的磁性薄膜和磁阻效应器件及使用该磁性器件的磁性器件，在基片（2）上形成有衬底（2）和Co2MGa1-xAlx薄膜（3），Co2MGa1-xAlx薄膜 （3）具有L21或B2单相结构，M的薄膜为Ti，V，Mo，W，Cr，Mn和Fe中的一种或两种以上，M中的平均价电子浓度Z为5.5 <= Z <= 7.5，0 <= x <= 0.7，在室温下显示出铁磁性，并且可以获得高的自旋极化性。 可以在衬底（2）和Co2FexCr1-xAl薄膜（3）之间插入缓冲层（4）。 使用这种磁性薄膜的隧道磁阻效应器件和巨磁阻效应器件可以在低磁场下在室温下获得大的TMR和GMR。

公开(公告)号：US20060060027A1

公开(公告)日：2006-03-23

申请号：US11258569

申请日：2005-10-25

申请人： Katsumi Okayama ,  Kaoru Kobayashi ,  Koichiro Inomata ,  Satoshi Sugimoto ,  Yoshihiro Kato

发明人： Katsumi Okayama ,  Kaoru Kobayashi ,  Koichiro Inomata ,  Satoshi Sugimoto ,  Yoshihiro Kato

IPC分类号： B22F9/24

CPC分类号： B82Y30/00 ,  B22F1/0018 ,  B22F1/0059 ,  B22F9/24 ,  B22F9/305 ,  B22F2998/00 ,  B82Y25/00 ,  B82Y40/00 ,  C22C32/0094 ,  H01F1/0054 ,  H01F41/30 ,  H01F41/301 ,  Y10S977/777 ,  Y10S977/783 ,  Y10T428/12146 ,  Y10T428/254 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/29 ,  Y10T428/2991 ,  Y10T428/2998 ,  B22F3/02

摘要： A method for producing a magnetic particle forming a magnetic material for absorbing electromagnetic waves comprises the steps of mixing an organometallic complex or a metal salt with a chain polymer and dissolving the mixture in a solvent (step S1); raising the temperature of the mixture to reaction temperature (step S2), carrying out a reaction at the reaction temperature (step S3); and forming the magnetic particle having a structure that the periphery of each fine particle formed from the organometallic complex or the metal salt is surrounded by the chain polymer and recovering the formed magnetic particle after the reaction (step S4). The magnetic particle has a nanogranular structure to become a magnetic material for absorbing electromagnetic waves. Such a magnetic particle is produced by a wet reaction. Thus, a larger amount of magnetic particle can be produced by one reaction.

公开(公告)号：US5071493A

公开(公告)日：1991-12-10

申请号：US470748

申请日：1990-01-26

申请人： Tetsuhiko Mizoguchi ,  Isao Sakai ,  Koichiro Inomata

发明人： Tetsuhiko Mizoguchi ,  Isao Sakai ,  Koichiro Inomata

IPC分类号： C22C38/00 ,  H01F1/053 ,  H01F1/057 ,  H01F1/08

CPC分类号： H01F1/0577

摘要： There is disclosed a permanent magnet comprising a sintered alloy composed of rare earth elements (R), boron and iron. This permanent magnet is substantially constituted by 2-phase systems, i.e. a ferromagnetic Fe-rich phase (Nd.sub.2 Fe.sub.14 B) and a nonmagnetic R-rich phase (Nd.sub.97 Fe.sub.3), and has BH.sub.max of more than 38.0 MGOe.

摘要翻译： 公开了一种永磁体，其包括由稀土元素（R），硼和铁组成的烧结合金。 该永磁体基本上由两相体系构成，即铁磁性富Fe相（Nd2Fe14B）和非磁性富R相（Nd97Fe3），BHmax大于38.0MGOe。

公开(公告)号：US4975213A

公开(公告)日：1990-12-04

申请号：US294124

申请日：1989-01-06

申请人： Isao Sakai ,  Akihiko Tsutai ,  Masashi Sahashi ,  Tetsuhiko Mizoguchi ,  Koichiro Inomata

发明人： Isao Sakai ,  Akihiko Tsutai ,  Masashi Sahashi ,  Tetsuhiko Mizoguchi ,  Koichiro Inomata

IPC分类号： C22C1/04 ,  H01F1/057

CPC分类号： H01F1/0578 ,  C22C1/0441

摘要： In a method for producing a resin-bonded rare earth-iron-boron magnet, a powder is subjected to a heat-treatment below its melting point. The powder can be either: (1) a mixture of both: (a) a powder of a rare earth-iron-boron magnetic alloy comprising about 8 to about 30 atomic percent of R, which stands for at least one selected from the group of Y (yttrium) and rare earth elements, about 2 to about 28 atomic precent of B(boron), and at least 50 atomic percent of Fe(iron) and (b) at least one of the group consisting of R, R-oxides, which are oxides of R, and R-compound, which are the compounds consisting essentially of more than 30 atomic percent of R and the balance substantially of at least one of Fe and Co; or (2) a rare earth-iron-boron magnetic alloy comprising about 8 to about 30 atomic percent of R, about 2 to about 28 atomic percent of B, about 0.1 to about 13 atomic percent of Ga, and at least 50 atomic percent of Fe. The resultant heat-treatment powder is then bonded with a resin. The present invention also includes a magnet such as might be made by such a method.

公开(公告)号：US4878964A

公开(公告)日：1989-11-07

申请号：US249945

申请日：1988-09-27

申请人： Tetsuhiko Mizoguchi ,  Koichiro Inomata ,  Toru Higuchi ,  Isao Sakai

发明人： Tetsuhiko Mizoguchi ,  Koichiro Inomata ,  Toru Higuchi ,  Isao Sakai

IPC分类号： H01F1/04 ,  H01F1/057

CPC分类号： H01F1/057 ,  H01F1/0577

摘要： A permanent magnetic alloy essentially consists of 10 to 40% by weight of R, 0.1 to 0.8% by weight of boron, 50 to 300 ppm by weight of oxygen and the balance of iron, where R is at least one component selected from the group consisting of yttrium and the rate-earth elements.An alloy having this composition has a high coercive force .sub.I H.sub.C and a high residual magnetic flux density and therefore has a high maximum energy product.

公开(公告)号：US4827235A

公开(公告)日：1989-05-02

申请号：US73184

申请日：1987-07-14

申请人： Koichiro Inomata ,  Tetsuhiko Mizoguchi ,  Naoyuki Sori ,  Hideki Yamamiya ,  Isao Sakai

发明人： Koichiro Inomata ,  Tetsuhiko Mizoguchi ,  Naoyuki Sori ,  Hideki Yamamiya ,  Isao Sakai

IPC分类号： G01R33/383 ,  H01F7/02 ,  H01F1/24 ,  C04B35/32

CPC分类号： G01R33/383 ,  H01F7/0278

摘要： A magnetic field generator comprises a permanent magnet, and pole pieces magnetically connected to the permanent magnet. The pole pieces are disposed to face each other to generate a magnetic field between them, and have a specific resistance of 20 .mu..OMEGA.-cm or more. The permanent magnet comprises a sintered alloy including iron as a main component, a rare earth element including yttrium, cobalt, and boron. The permanent magnet includes, as its main part, a strong magnetic Fe-rich phase of a tetragonal system, as well as a non-magnetic Laves phase, and preferably has a maximum energy product of 38 MGOe or more.

摘要翻译： 磁场发生器包括永磁体和与永磁体磁连接的极片。 磁极片彼此面对配置，在它们之间产生磁场，电阻值为20μΩEGEG-cm以上。 永磁体包括以铁为主要成分的烧结合金，包括钇，钴和硼的稀土元素。 永久磁铁作为其主要部分包括四方晶系的强磁铁富相以及非磁性Laves相，优选具有38MGOe以上的最大能量乘积。

公开(公告)号：US4631796A

公开(公告)日：1986-12-30

申请号：US536836

申请日：1983-09-29

申请人： Koichiro Inomata ,  Takao Sawa ,  Osamu Arakawa

发明人： Koichiro Inomata ,  Takao Sawa ,  Osamu Arakawa

IPC分类号： G01L3/10 ,  H01F1/153 ,  H01F10/13 ,  B23P11/02 ,  G01L3/02

CPC分类号： G01L3/102 ,  G01L3/103 ,  H01F1/15308 ,  H01F10/131 ,  Y10T29/49863 ,  Y10T29/49865

摘要： There are disclosed a torque sensor having a rotary shaft and a thin strip of an amorphous magnetic alloy which has a great magnetic strain constant windingly fixed on the rotary shaft and detecting a torque in a non-contact style by a variation in magnetic properties of the thin strip of the amorphous alloy, characterized in that the amorphous alloy is an iron-based amorphous alloy having a crystallization temperature of 450.degree. C. or more, and a method for manufacturing the same, characterized in that an inductive magnetic anisotropy had been previously given to the thin strip and then the thin strip is windingly fixed on the rotary shaft.The torque sensor according to the present invention permits measuring a large torque with a good accuracy in an extensive temperature, and is manufactured with ease.

摘要翻译： 公开了一种扭矩传感器，其具有旋转轴和非晶磁性合金薄带，该磁性合金的磁性应变常数卷绕固定在旋转轴上，并通过磁性能的变化来检测非接触式的扭矩 非晶态合金的薄带，其特征在于，所述非晶态合金为结晶温度为450℃以上的铁系非晶合金及其制造方法，其特征在于，感应磁各向异性以前 给予薄带，然后将薄带卷绕固定在旋转轴上。 根据本发明的扭矩传感器允许在广泛的温度下以高精度测量大扭矩，并且容易制造。

公开(公告)号：US4225339A

公开(公告)日：1980-09-30

申请号：US969960

申请日：1978-12-15

申请人： Koichiro Inomata ,  Senji Shimanuki ,  Michio Hasegawa

发明人： Koichiro Inomata ,  Senji Shimanuki ,  Michio Hasegawa

IPC分类号： C22C45/00 ,  H01F1/153 ,  C22C38/10 ,  C22C38/12

CPC分类号： H01F1/153 ,  C22C45/008

摘要： An amorphous alloy of high magnetic permeability, having a general formula;(T.sub.y Nb.sub.x A.sub.1-x-y).sub.100-z X.sub.zwhere,"A" is at least one kind selected from the group consisting of 0.5 to 10 atomic % of V, Ta, Ti, Zr, Cr, Mo, W and 0.5 to 30 atomic % of Ni based on the total amount of T, Nb and A,"T" is at least one element selected from the group of Fe and Co,"X" is B or B+Si, the amount of Si being at most 25 atomic % based on the total amount of the alloy,"x" ranges between 0.005 and 0.1,"y" ranges between 0.5 and 0.99, and"z" ranges between 15 and 35, with the proviso of 0.005.ltoreq.1-x-y.ltoreq.0.4.

摘要翻译： 具有高通透性的非晶合金，具有通式; （TyNbxA1-xy）100-zXz其中，“A”为选自V，Ta，Ti，Zr，Cr，Mo，W的0.5〜10原子％，V为0.5〜30原子％ Ni基于T，Nb和A的总量，“T”为选自Fe和Co中的至少一种元素，“X”为B或B + Si，Si的量为至多25原子％ 基于合金的总量，“x”在0.005和0.1之间，“y”在0.5和0.99之间，“z”在15和35之间，条件是0.005 = 0.4。