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    Exchange-coupled film including pinned magnetic layer composed of a plurality of cobalt-iron alloys having different compositions disposed on antiferromagnetic layer, and magnetic sensing element
    1.
    发明申请
    Exchange-coupled film including pinned magnetic layer composed of a plurality of cobalt-iron alloys having different compositions disposed on antiferromagnetic layer, and magnetic sensing element 有权
    交换耦合膜包括由反铁磁性层上设置的具有不同组成的多种钴 - 铁合金构成的固定磁性层和磁感应元件

    公开(公告)号：US20060098355A1

    公开(公告)日：2006-05-11

    申请号：US11271263

    申请日：2005-11-08

    申请人： Kazuaki Ikarashi ,  Naoya Hasegawa ,  Eiji Umetsu ,  Kazumi Matsuzaka ,  Takuya Seino

    发明人： Kazuaki Ikarashi ,  Naoya Hasegawa ,  Eiji Umetsu ,  Kazumi Matsuzaka ,  Takuya Seino

    IPC分类号： G11B5/33 ,  G11B5/127

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B2005/3996

    摘要： An exchange-coupled film includes a ferromagnetic layer and an antiferromagnetic layer disposed on each other, the magnetization direction of the ferromagnetic layer being pinned in one direction by an exchange coupling magnetic field generated at the interface between the ferromagnetic layer and the antiferromagnetic layer, wherein the antiferromagnetic layer is composed of IrzMn100-z (wherein 2 atomic percent≦z≦80 atomic percent), the ferromagnetic layer has a two-layer structure including a CoyFe100-y layer having a face-centered cubic structure (wherein 80 atomic percent≦y≦100 atomic percent), the CoyFe100-y layer being in contact with the antiferromagnetic layer, and an FexCo100-x layer (wherein x≧30 atomic percent), the FexCo100-x layer being disposed on the CoyFe100-y layer, and the thickness of the FexCo100-x layer is 30% to 90% of the total thickness of the ferromagnetic layer.

    摘要翻译： 交换耦合膜包括铁磁层和反铁磁层，其铁磁层的磁化方向通过在铁磁层和反铁磁层之间的界面处产生的交换耦合磁场在一个方向上被钉扎，其中 反铁磁性层由贱金属100-z（其中2原子％<= z <= 80原子％）组成，铁磁层具有双层结构 包括具有面心立方结构（其中80原子％<= y <= 100原子百分比）的Co 100 100 y + 100-y +层与反铁磁层接触，以及Fe x 100 Co + 100-x层（其中 x> = 30原子百分比），Fe 3 O 100-x层被设置在Co 100 Co 100-y 层，并且Fe×100 Co层的厚度为30％ 到铁磁层的总厚度的90％。

    Magnetic sensing element comprising a pinned magnetic layer, a free magnetic layer, and a nonmagnetic conductive layer disposed therebetween
    2.
    发明授权
    Magnetic sensing element comprising a pinned magnetic layer, a free magnetic layer, and a nonmagnetic conductive layer disposed therebetween 失效
    磁感测元件包括钉扎磁性层，自由磁性层和设置在它们之间的非磁性导电层

    公开(公告)号：US07312960B2

    公开(公告)日：2007-12-25

    申请号：US11072079

    申请日：2005-03-03

    申请人： Kazumi Matsuzaka ,  Eiji Umetsu ,  Naoya Hasegawa

    发明人： Kazumi Matsuzaka ,  Eiji Umetsu ,  Naoya Hasegawa

    IPC分类号： G11B5/39

    CPC分类号： B82Y10/00 ,  G11B5/3903 ,  H01F10/3277

    摘要： A magnetic sensing element is provided in which the magnetization of a pinned magnetic layer is pinned by a uniaxial anisotropy of the pinned magnetic layer itself. A nonmagnetic layer for increasing the coercive force of the pinned magnetic layer is disposed adjacent to the pinned magnetic layer at the opposite side of a nonmagnetic conductive layer. Specifically, the nonmagnetic layer is composed of, for example, Cu. In addition, the thickness of the nonmagnetic layer is adequately controlled.

    摘要翻译： 提供了一种磁敏元件，其中被钉扎的磁性层的磁化被钉扎的磁性层本身的单轴各向异性固定。 用于增加被钉扎磁性层的矫顽力的非磁性层与非磁性导电层的相对侧的被钉扎的磁性层相邻设置。 具体地说，非磁性层由例如Cu构成。 此外，非磁性层的厚度被充分地控制。

    Exchange-coupled film including pinned magnetic layer composed of a plurality of cobalt-iron alloys having different compositions disposed on antiferromagnetic layer, and magnetic sensing element
    3.
    发明授权
    Exchange-coupled film including pinned magnetic layer composed of a plurality of cobalt-iron alloys having different compositions disposed on antiferromagnetic layer, and magnetic sensing element 有权
    交换耦合膜包括由反铁磁性层上设置的具有不同组成的多种钴 - 铁合金构成的固定磁性层和磁感应元件

    公开(公告)号：US07369372B2

    公开(公告)日：2008-05-06

    申请号：US11271263

    申请日：2005-11-08

    申请人： Kazuaki Ikarashi ,  Naoya Hasegawa ,  Eiji Umetsu ,  Kazumi Matsuzaka ,  Takuya Seino

    发明人： Kazuaki Ikarashi ,  Naoya Hasegawa ,  Eiji Umetsu ,  Kazumi Matsuzaka ,  Takuya Seino

    IPC分类号： G11B5/00

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B2005/3996

    摘要： An exchange-coupled film includes a ferromagnetic layer and an antiferromagnetic layer disposed on each other, the magnetization direction of the ferromagnetic layer being pinned in one direction by an exchange coupling magnetic field generated at the interface between the ferromagnetic layer and the antiferromagnetic layer, wherein the antiferromagnetic layer is composed of IrzMn100-z (wherein 2 atomic percent≦z≦80 atomic percent), the ferromagnetic layer has a two-layer structure including a CoyFe100-y layer having a face-centered cubic structure (wherein 80 atomic percent≦y≦100 atomic percent), the CoyFe100-y layer being in contact with the antiferromagnetic layer, and an FexCo100-x layer (wherein x≧30 atomic percent), the FexCo100-x layer being disposed on the CoyFe100-y layer, and the thickness of the FexCo100-x layer is 30% to 90% of the total thickness of the ferromagnetic layer.

    摘要翻译： 交换耦合膜包括铁磁层和反铁磁层，其铁磁层的磁化方向通过在铁磁层和反铁磁层之间的界面处产生的交换耦合磁场在一个方向上被钉扎，其中 反铁磁性层由贱金属100-z（其中2原子％<= z <= 80原子％）组成，铁磁层具有双层结构 包括具有面心立方结构（其中80原子％<= y <= 100原子百分比）的Co 100 100 y + 100-y +层与反铁磁层接触，以及Fe x 100 Co + 100-x层（其中 x> = 30原子百分比），Fe 3 O 100-x层被设置在Co 100 Co 100-y 层，并且Fe×100 Co层的厚度为30％ 到铁磁层的总厚度的90％。

    Magnetic sensor including bridge circuit having fixed resistance like structure of element
    6.
    发明授权
    Magnetic sensor including bridge circuit having fixed resistance like structure of element 有权
    磁传感器包括具有固定电阻的桥接电路，如元件结构

    公开(公告)号：US07463026B2

    公开(公告)日：2008-12-09

    申请号：US11679083

    申请日：2007-02-26

    申请人： Shinichi Sasaki ,  Kiyoshi Sato ,  Naoya Hasegawa ,  Yoshito Sasaki ,  Eiji Umetsu

    发明人： Shinichi Sasaki ,  Kiyoshi Sato ,  Naoya Hasegawa ,  Yoshito Sasaki ,  Eiji Umetsu

    IPC分类号： G01R33/09 ,  G01B7/14 ,  H01L43/08

    CPC分类号： H04M1/0245 ,  B82Y25/00 ,  G01R33/07 ,  G01R33/093 ,  H04M2250/12

    摘要： A magnetic sensor uses a magnetoresistance element which can be driven in a stable manner with a dipole irrespective of a polarity of an external magnetic field. A resistance value R of first magnetoresistance elements varies, and a resistance value of second magnetoresistance elements does not vary with a variation in magnetic field magnitude of the external magnetic field H1 in the positive direction. A resistance value R of second magnetoresistance elements varies and a resistance value of first magnetoresistance elements does not vary with a variation in magnetic field magnitude of the external magnetic field H2 in the negative direction. Accordingly, the magnetic sensor can be driven in a stable manner with a dipole irrespective of the polarity of the external magnetic field.

    摘要翻译： 磁传感器使用磁阻元件，其可以与外部磁场的极性无关地以偶极子稳定地驱动。 第一磁阻元件的电阻值R变化，第二磁阻元件的电阻值不随着外部磁场H1在正方向上的磁场强度的变化而变化。 第二磁阻元件的电阻值R变化，第一磁阻元件的电阻值不随外部磁场H2在负方向的磁场强度的变化而变化。 因此，无论外部磁场的极性如何，都可以用偶极子稳定地驱动磁传感器。

    EXCHANGE-COUPLED FILM, METHOD FOR MAKING EXCHANGE-COUPLED FILM, AND MAGNETIC SENSING ELEMENT INCLUDING EXCHANGE-COUPLED FILM
    9.
    发明申请
    EXCHANGE-COUPLED FILM, METHOD FOR MAKING EXCHANGE-COUPLED FILM, AND MAGNETIC SENSING ELEMENT INCLUDING EXCHANGE-COUPLED FILM 审中-公开
    交联膜，交联膜的制造方法以及包括交联膜的磁感应元件

    公开(公告)号：US20080068767A1

    公开(公告)日：2008-03-20

    申请号：US11943955

    申请日：2007-11-21

    申请人： Ryou Nakabayashi ,  Eiji Umetsu ,  Naoya Hasegawa

    发明人： Ryou Nakabayashi ,  Eiji Umetsu ,  Naoya Hasegawa

    IPC分类号： G11B5/127 ,  G11B5/33

    CPC分类号： G11B5/3932 ,  B82Y25/00 ,  B82Y40/00 ,  G01R33/093 ,  G11B5/3906 ,  H01F10/30 ,  H01F10/3263 ,  H01F10/3272 ,  H01F41/308 ,  H01F41/325 ,  Y10T29/49021 ,  Y10T29/49032

    摘要： An exchange-coupled film includes a seed layer, an antiferromagnetic layer, and a ferromagnetic layer. The seed layer is formed at a thickness that is larger than the critical thickness, and the thickness of the seed layer is then decreased by etching so as to be smaller than or equal to the critical thickness. Thereby, a crystalline phase which extends through the seed layer from the upper surface to the lower surface can be formed, and/or the average size, in a direction parallel to the layer surface, of the crystal grains in the seed layer can be set to be larger than the thickness of the seed layer. Consequently, a large exchange coupling magnetic field Hex can be generated between the antiferromagnetic layer and the ferromagnetic layer.

    摘要翻译： 交换耦合膜包括种子层，反铁磁层和铁磁层。 籽晶层的厚度大于临界厚度，然后通过蚀刻使籽晶层的厚度减小到临界厚度以下。 因此，可以形成从上表面向下表面延伸穿过晶种层的结晶相，和/或可以设定种子层中晶粒平行于层表面的方向上的平均尺寸 大于种子层的厚度。 因此，可以在反铁磁层和铁磁层之间产生大的交换耦合磁场Hex。

    Magnetic detecting element having a self-pinned layer
    10.
    发明授权
    Magnetic detecting element having a self-pinned layer 有权
    磁性检测元件具有自固定层

    公开(公告)号：US07268984B2

    公开(公告)日：2007-09-11

    申请号：US11156868

    申请日：2005-06-20

    申请人： Naoya Hasegawa ,  Masamichi Saito ,  Eiji Umetsu

    发明人： Naoya Hasegawa ,  Masamichi Saito ,  Eiji Umetsu

    IPC分类号： G11B5/33

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3932 ,  G11B2005/3996

    摘要： A CPP magnetic detecting element having a pinned magnetic layer whose magnetization is fixed by its uniaxial anisotropy in a structure that CIP magnetic detecting elements do not allow. In the CPP magnetic detecting element, the upper and lower surfaces of a pinned magnetic layer having an artificial ferrimagnetic structure are disposed between a magnetostriction-enhancing layer made of a nonmagnetic metal and a nonmagnetic material layer having a higher lattice constant than Cu. CPP magnetic detecting elements allow this structure without reducing the variation in resistance per unit area ΔR·A. Thus, the magnetostriction coefficient of the pinned magnetic layer can be increased from above and below, thereby more firmly fixing the magnetization of the pinned magnetic layer.

    摘要翻译： 一种CPP磁检测元件，其具有以CIP磁检测元件不允许的结构的磁化被其单轴各向异性固定的钉扎磁性层。 在CPP磁检测元件中，具有人造亚铁磁结构的钉扎磁性层的上表面和下表面设置在由非磁性金属制成的磁致伸缩增强层和具有比Cu更高的晶格常数的非磁性材料层之间。 CPP磁检测元件允许这种结构，而不减少每单位面积DeltaR.A的电阻变化。 因此，可以从上方和下方增加钉扎磁性层的磁致伸缩系数，从而更牢固地固定被钉扎的磁性层的磁化。