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1. 发明授权

US5898546A Magnetoresistive head and magnetic recording apparatus 失效
标题翻译：磁阻磁头和磁记录装置
公开(公告)号：US5898546A
公开(公告)日：1999-04-27
申请号：US503006
申请日：1995-07-17
申请人： Hitoshi Kanai , Yoshifumi Mizoshita , Junichi Kane , Kenichi Aoshima
发明人： Hitoshi Kanai , Yoshifumi Mizoshita , Junichi Kane , Kenichi Aoshima
IPC分类号： G11B5/00 , G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/00 , G11B5/3903 , G11B2005/3996 , G11B5/3925 , G11B5/3967
摘要： The present invention relates to a magnetoresistive head capable of converting a change in a magnetic field generated by a magnetic recording medium into a change in electric resistivity by utilizing spin valve magnetoresistance effect to read signal information. The magnetoresistive head comprises a first magnetic layer, a second magnetic layer formed on the first magnetic layer through a first nonmagnetic metal layer and magnetized in one direction, a third magnetic layer formed on the second magnetic layer through a second nonmagnetic metal layer, and an electric current supplying layer for applying a constant current to at least the third magnetic layer, the second nonmagnetic metal layer and the second magnetic layer in one of the same direction as and the opposite direction to the direction of magnetization of the second magnetic layer.
摘要翻译：本发明涉及一种能够通过利用自旋阀磁电阻效应将磁记录介质产生的磁场变化转换为电阻率变化的磁阻头。磁阻头包括第一磁性层，通过第一非磁性金属层形成在第一磁性层上并沿一个方向磁化的第二磁性层，通过第二非磁性金属层形成在第二磁性层上的第三磁性层，以及电流供给层，用于向与第二磁性层的磁化方向相同的方向和与第二磁性层的磁化方向相反的方向中的至少第三磁性层，第二非磁性金属层和第二磁性层施加恒定电流。

2. 发明授权

US5978182A Magnetoresistive head with spin valve configuration 失效
标题翻译：具有自旋阀配置的磁阻头
公开(公告)号：US5978182A
公开(公告)日：1999-11-02
申请号：US971102
申请日：1997-11-14
申请人： Hitoshi Kanai , Yoshifumi Mizoshita , Junichi Kane , Kenichi Aoshima
发明人： Hitoshi Kanai , Yoshifumi Mizoshita , Junichi Kane , Kenichi Aoshima
IPC分类号： G11B5/00 , G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/00 , G11B5/3903 , G11B2005/3996 , G11B5/3925 , G11B5/3967
摘要： The present invention relates to a magnetoresistive head capable of converting a change in a magnetic field generated by a magnetic recording medium into a change in electric resistivity by utilizing spin valve magnetoresistance effect to read signal information. The magnetoresistive head comprises a first magnetic layer, a second magnetic layer formed on the first magnetic layer through a first nonmagnetic metal layer and magnetized in one direction, a third magnetic layer formed on the second magnetic layer through a second nonmagnetic metal layer, and an electric current supplying layer for applying a constant current to at least the third magnetic layer, the second nonmagnetic metal layer and the second magnetic layer in one of the same direction as and the opposite direction to the direction of magnetization of the second magnetic layer.
摘要翻译：本发明涉及一种能够通过利用自旋阀磁电阻效应将磁记录介质产生的磁场变化转换为电阻率变化的磁阻头。磁阻头包括第一磁性层，通过第一非磁性金属层形成在第一磁性层上并在一个方向上被磁化的第二磁性层，通过第二非磁性金属层形成在第二磁性层上的第三磁性层，以及电流供给层，用于向与第二磁性层的磁化方向相同的方向和与第二磁性层的磁化方向相反的方向中的至少第三磁性层，第二非磁性金属层和第二磁性层施加恒定电流。

3. 发明授权

US5771141A Magnetoresistive head and magnetic recording/reproducing apparatus 失效
标题翻译：磁阻磁头和磁记录/重放装置
公开(公告)号：US5771141A
公开(公告)日：1998-06-23
申请号：US766511
申请日：1996-12-13
申请人： Yoshinori Ohtsuka , Takao Koshikawa , Yoshifumi Mizoshita , Yuji Uehara , Eiichi Kanda , Ken-ichi Aoshima , Hitoshi Kanai , Junichi Kane
发明人： Yoshinori Ohtsuka , Takao Koshikawa , Yoshifumi Mizoshita , Yuji Uehara , Eiichi Kanda , Ken-ichi Aoshima , Hitoshi Kanai , Junichi Kane
IPC分类号： G11B5/39
CPC分类号： G11B5/39
摘要： A magnetoresistive head comprises a magnetoresistive layer having an axis of easy magnetization in the direction parallel to an air bearing surface, a first electrode formed on the magnetoresistive layer on the air bearing surface side and an oblique side portion with respect to the air bearing surface, and a second electrode formed to be separated at a distance from the first electrode and having a side portion substantially parallel to the oblique side portion of the first electrode on the magnetoresistive layer.
摘要翻译：磁阻头包括在平行于空气轴承表面的方向上具有容易磁化的轴的磁阻层，形成在空气轴承表面侧的磁阻层上的第一电极和相对于空气轴承表面的倾斜侧部，以及第二电极，其形成为与所述第一电极隔开一定距离，并且具有与所述磁阻层上的所述第一电极的所述倾斜侧部大致平行的侧部。

4. 发明授权

US5583726A Magneto-resistive head using flux guide 失效
标题翻译：磁阻头使用助焊剂
公开(公告)号：US5583726A
公开(公告)日：1996-12-10
申请号：US435379
申请日：1995-05-05
申请人： Yoshifumi Mizoshita , Takao Koshikawa , Hitoshi Kanai , Junichi Kane , Yoshinori Otsuka , Yukinori Ikegawa
发明人： Yoshifumi Mizoshita , Takao Koshikawa , Hitoshi Kanai , Junichi Kane , Yoshinori Otsuka , Yukinori Ikegawa
IPC分类号： G11B5/02 , G11B5/31 , G11B5/39 , G11B19/04 , G11B5/33
CPC分类号： G11B5/3916 , G11B19/04 , G11B5/02 , G11B5/3183 , G11B5/3903 , G11B5/3925 , G11B5/3967
摘要： A magneto-resistive (MR) head has an MR layer in a space formed by shield layers by providing a distance enough to protect magnetic flux, flowing through the MR layer from a recording medium through a gap formed by the shield layers, from leaking out to the shield layers. A flux guide is provided between the MR layer and the gap and has an end magnetically connected to the MR extending over an effective area of the MR head, and another end having a width a little narrower than a width of track of the recording medium. A side of the MR layer, opposite to the side connected with the flux guide layer is placed in a narrow space formed at a corner of the space. Magnetic flux leaked from the gap due to a sense current flowing through the MR layer is eliminated by making a current flow through a recording coil layer or through an electrically conductive layer placed in the space.
摘要翻译：磁阻（MR）头在由屏蔽层形成的空间中具有MR层，通过提供足够的距离来保护磁通量，通过由屏蔽层形成的间隙从记录介质流过MR层，从而泄漏到屏蔽层。磁通引导件设置在MR层和间隙之间，并且具有与在MR磁头的有效区域上延伸的MR磁性连接的端部，另一端具有比记录介质的磁道宽度稍窄的宽度。 MR层的与与磁通引导层连接的一侧相对的一侧被放置在形成在该空间的角部的狭窄空间中。通过使流过记录线圈层的电流或通过放置在该空间中的导电层而消除由于流过MR层的感测电流而从间隙泄漏的磁通。

5. 发明授权

US5777827A Horizontal type magneto-resistive head using flux guide 失效
标题翻译：水平型磁阻头使用磁通导向
公开(公告)号：US5777827A
公开(公告)日：1998-07-07
申请号：US709270
申请日：1996-09-06
申请人： Yoshifumi Mizoshita , Takao Koshikawa , Hitoshi Kanai , Junichi Kane , Yoshinori Otsuka , Yukinori Ikegawa
发明人： Yoshifumi Mizoshita , Takao Koshikawa , Hitoshi Kanai , Junichi Kane , Yoshinori Otsuka , Yukinori Ikegawa
IPC分类号： G11B5/02 , G11B5/31 , G11B5/39 , G11B19/04 , G11B5/33
CPC分类号： G11B5/3916 , G11B19/04 , G11B5/02 , G11B5/3183 , G11B5/3903 , G11B5/3925 , G11B5/3967
摘要： A magneto-resistive (MR) head has an MR layer in a space formed by shield layers by providing a distance enough to protect magnetic flux, flowing through the MR layer from a recording medium through a gap formed by the shield layers, from leaking out to the shield layers. A flux guide is provided between the MR layer and the gap, and has an end magnetically connected to the MR, extending over an effective area of the MR head, and another end having a width a little narrower than a width of track of the recording medium. A side of the MR layer, opposite to the side connected with the flux guide layer is placed in a narrow space formed at a corner of the space. Magnetic flux leaked from the gap due to a sense current flowing through the MR layer is eliminated by making a current flow through a recording coil layer or through an electrically conductive layer placed in the space.
摘要翻译：磁阻（MR）头在由屏蔽层形成的空间中具有MR层，通过提供足够的距离来保护磁通量，通过由屏蔽层形成的间隙从记录介质流过MR层，从而泄漏到屏蔽层。磁通引导件设置在MR层和间隙之间，并且具有磁性地连接到MR的端部，延伸在MR磁头的有效区域上，另一端的宽度比记录的轨道的宽度稍窄中。 MR层的与与磁通引导层连接的一侧相对的一侧被放置在形成在该空间的角部的狭窄空间中。通过使流过记录线圈层的电流或通过放置在该空间中的导电层而消除由于流过MR层的感测电流而从间隙泄漏的磁通。

6. 发明授权

US06493196B1 Spin-valve magnetoresistive sensor and magnetic head having such a spin-valve magnetoresistive sensor 失效
标题翻译：旋转阀磁阻传感器和具有这种自旋阀磁阻传感器的磁头
公开(公告)号：US06493196B1
公开(公告)日：2002-12-10
申请号：US09476005
申请日：1999-12-29
申请人： Kenji Noma , Hitoshi Kanai , Junichi Kane , Kenichi Aoshima
发明人： Kenji Noma , Hitoshi Kanai , Junichi Kane , Kenichi Aoshima
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/012 , G11B5/3903 , G11B2005/3996 , Y10T29/49034
摘要： A spin-valve magnetoresistive sensor includes a free layer of a ferromagnetic material, a pinned layer provided on the free layer and a pinning layer of an anti-ferromagnetic material provided on the pinned layer, the anti-ferromagnetic material being an ordered alloy containing manganese. The pinned layer includes a first pinned layer of a ferromagnetic material, a second pinned layer of a ferromagnetic material provided on the first pinned layer and an intermediate layer interposed between the first and second pinned layers such that the first and second pinned layers establish a super-exchange interaction in an anti-parallel manner. The second pinned layer has a magnetic moment smaller than a magnetic moment of the first pinned layer.
摘要翻译：自旋阀磁阻传感器包括铁磁材料的自由层，设置在自由层上的钉扎层和设置在钉扎层上的反铁磁材料的钉扎层，反铁磁材料是含有锰的有序合金。被钉扎层包括铁磁材料的第一固定层，设置在第一被钉扎层上的铁磁材料的第二钉扎层和介于第一和第二钉扎层之间的中间层，使得第一和第二钉扎层建立超级以反并行方式交换互动。第二钉扎层具有小于第一钉扎层的磁矩的磁矩。

7. 发明授权

US06501627B2 Spin-valve magnetoresistive head, and composite-type magnetic head and magnetic recording medium drive using the same 失效
公开(公告)号：US06501627B2
公开(公告)日：2002-12-31
申请号：US09994262
申请日：2001-11-26
申请人： Kenji Noma , Hitoshi Kanai , Junichi Kane , Kenichi Aoshima
发明人： Kenji Noma , Hitoshi Kanai , Junichi Kane , Kenichi Aoshima
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3967 , G11B2005/3996
摘要： A spin-valve magnetoresistive head having end parts of a free magnetic layer insensitive to an external magnetic field so as to improve sensitivity is provided. The spin-valve magnetoresistive head includes, at least on the terminal part sides, a lamination formed of a first antiferromagnetic layer, a soft magnetic layer, an antiparallel coupling intermediate layer, and a first free magnetic layer.

8. 发明授权

US06759120B2 Magnetoresistive film, magnetoresistive head, information regeneration apparatus and magnetoresistive film manufacture method 失效
标题翻译：磁阻膜，磁阻头，信息再生装置和磁阻膜制造方法
公开(公告)号：US06759120B2
公开(公告)日：2004-07-06
申请号：US09726752
申请日：2000-11-30
申请人： Hong Jongill , Kenichi Aoshima , Kenji Noma , Junichi Kane , Hitoshi Kanai
发明人： Hong Jongill , Kenichi Aoshima , Kenji Noma , Junichi Kane , Hitoshi Kanai
IPC分类号： G11B531
CPC分类号： B82Y25/00 , B82Y10/00 , B82Y40/00 , G11B5/3903 , G11B2005/3996 , H01F10/3268 , H01F41/302 , H01F41/325 , H01L43/08 , H01L43/12 , Y10S428/911 , Y10T428/1114 , Y10T428/1121
摘要： There is disclosed a magnetoresistive film in which increase of a coupling field accompanying thickness reduction of a middle layer is inhibited. The magnetoresistive film is a multilayered film including a pinned layer 3 having magnetization whose direction is fixed, a nonmagnetic middle layer 4 formed on the pinned layer, and a free layer 5 formed on the middle layer and provided with magnetization whose direction changes in accordance with an external magnetic field, the magnetoresistive film indicates a magnitude of resistance in accordance with an angle formed by the magnetization direction of the pinned layer and the magnetization direction of the free layer, and a copper oxide layer 7 of an oxide including a copper element is formed directly on the free layer, or on the free layer via an oxide layer 6 of a material fabricated by oxidizing a material constituting the free layer.
摘要翻译：公开了一种磁阻膜，其中伴随着中间层的厚度减小的耦合场的增加被抑制。磁阻膜是一种多层膜，其包括具有固定方向的磁化的被钉扎层3，形成在钉扎层上的非磁性中间层4和形成在中间层上的自由层5，该自由层5的方向根据外部磁场，磁阻膜表示根据被钉扎层的磁化方向和自由层的磁化方向形成的角度的电阻大小，包含铜元素的氧化物的氧化铜层7为通过氧化构成自由层的材料制成的材料的氧化物层6直接形成在自由层上或自由层上。

9. 发明授权

US6123780A Spin valve magnetoresistive head and manufacturing method therefor 失效
标题翻译：自旋阀磁阻头及其制造方法
公开(公告)号：US6123780A
公开(公告)日：2000-09-26
申请号：US6977
申请日：1998-01-14
申请人： Hitoshi Kanai , Kenichi Aoshima , Kenichiro Yamada , Mitsumasa Okada , Eiji Shimizu , Junichi Kane
发明人： Hitoshi Kanai , Kenichi Aoshima , Kenichiro Yamada , Mitsumasa Okada , Eiji Shimizu , Junichi Kane
IPC分类号： G11B5/31 , G11B5/39 , C21D1/04
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3967 , G11B2005/3996 , G11B5/3163
摘要： A method for manufacturing a spin valve GMR head is describe in which a fixed magnetic layer of the head may maintain magnetization in a desired orientation. In one aspect of the invention, the method comprises steps of: forming a magnetic film including at least a free magnetic layer, a non-magnetic metallic layer, a fixed magnetic layer, and a magnetic domain control layer; subjecting the magnetic film to a first heat treatment under a magnetic field to enhance magnetic anisotropy of the free magnetic layer; and subjecting the magnetic film to a second heat treatment under a magnetic field and at a higher temperature than the maximum temperature applied in the processes that precede the second heat treatment, to fix the magnetization in the fixed magnetic layer. In anther aspect of the invention, the method comprises steps of: forming a magnetic film including a free magnetic layer, a non-magnetic metallic layer, a fixed magnetic layer, and a magnetic domain control layer; subjecting the magnetic film to a first heat treatment under a magnetic field to fix the magnetization in the fixed magnetic layer; subjecting the magnetic film to a second heat treatment under a magnetic field to enhance magnetic anisotropy of the free magnetic layer; and subjecting the magnetic film to a third heat treatment in the absence of an externally applied magnetic field.
摘要翻译：描述了用于制造自旋阀GMR头的方法，其中磁头的固定磁性层可以将磁化保持在期望的取向。在本发明的一个方面，所述方法包括以下步骤：形成至少包括自由磁性层，非磁性金属层，固定磁性层和磁畴控制层的磁性膜; 在磁场下对磁性膜进行第一次热处理以提高自由磁性层的磁各向异性; 并且在磁场和比在第二热处理之前的工序中施加的最高温度更高的温度下对磁性膜进行第二次热处理，以将磁化固定在固定磁性层中。在本发明的另一方面，该方法包括以下步骤：形成包括自由磁性层，非磁性金属层，固定磁性层和磁畴控制层的磁性膜; 对磁性膜进行磁场的第一次热处理，以固定在固定磁性层中的磁化强度; 在磁场下对磁性膜进行第二次热处理，以提高自由磁性层的磁各向异性; 并且在没有外部施加的磁场的情况下对磁性膜进行第三次热处理。

10. 发明授权

US6154349A Magnetoresistive transducer including CoFeZ soft magnetic layer 失效
标题翻译：磁阻换能器包括CoFeZ软磁层
公开(公告)号：US6154349A
公开(公告)日：2000-11-28
申请号：US783464
申请日：1997-01-16
申请人： Hitoshi Kanai , Junichi Kane , Ken'ichiro Yamada
发明人： Hitoshi Kanai , Junichi Kane , Ken'ichiro Yamada
IPC分类号： G01R33/09 , G11B5/39 , H01F10/08 , H01F10/32 , H01L43/08
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3903 , G11B5/3967 , H01F10/3268 , G11B2005/3996
摘要： A magnetoresistive transducer includes a multilayer provided with a first soft magnetic layer, a conductive nonmagnetic layer, a second soft magnetic layer, and a biasing magnetic layer giving a magnetization of a predetermined direction to the second soft magnetic layer, in that order of superposition. The first soft magnetic layer is a multilayer superposed structure including a (Co.sub.y Fe.sub.100-y).sub.100-x Z.sub.x alloy layer where Z represents boron and x and y represent atomic fractions (at %), and an alloy layer containing at least Ni and Fe. The (Co.sub.y Fe.sub.100-y).sub.100-x Z.sub.x alloy layer ofthe first soft magnetic layer borders on the nonmagnetic layer and has a face-centered cubic lattice structure with a d spacing smaller than a d spacing of a Co.sub.y Fe.sub.100-y alloy. A pair of electrodes are formed on the multilayer for allowing a sense current to pass through the multilayer.
摘要翻译：磁阻换能器包括按照叠加次序设置有第一软磁层，导电非磁性层，第二软磁层和给予第二软磁层预定方向的磁化的偏置磁性层的多层。第一软磁层是包括（CoyFe100-y）100-xZx合金层，其中Z表示硼，x和y表示原子级分（at％））的多层重叠结构，以及至少含有Ni和Fe的合金层。第一软磁层的（CoyFe100-y）100-xZx合金层与非磁性层相邻，并且具有d间距小于CoyFe100-y合金的d间距的面心立方晶格结构。在多层上形成一对电极，以使感测电流通过多层。

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