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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。
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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
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。
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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
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。
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公开(公告)号:US5898546A
公开(公告)日:1999-04-27
申请号:US503006
申请日:1995-07-17
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。
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公开(公告)号:US5978182A
公开(公告)日:1999-11-02
申请号:US971102
申请日:1997-11-14
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。
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公开(公告)号:US5792546A
公开(公告)日:1998-08-11
申请号:US289204
申请日:1994-08-12
申请人: Michiaki Kanamine , Hitoshi Kanai , Junichi Kane , Junzo Toda , Yuji Uehara
发明人: Michiaki Kanamine , Hitoshi Kanai , Junichi Kane , Junzo Toda , Yuji Uehara
CPC分类号: G11B5/3932 , G11B5/3903 , G11B5/3912 , G11B5/3967 , G11B5/3163 , Y10S428/90 , Y10T428/1171 , Y10T428/24942 , Y10T428/2495
摘要: A magneto-resistive head is provided with a substrate, a lower shield layer made of a Fe-system magnetic material and provided above the substrate, and a non-magnetic insulator layer provided above the lower shield layer. The non-magnetic insulator layer has a function of suppressing deterioration of surface roughness of the lower shield layer when subjected to an annealing process under a magnetic field in order to improve magnetic characteristics of the lower shield layer to desired magnetic characteristics.
摘要翻译: 磁阻头设置有基板,由Fe系磁性材料制成并设置在基板上方的下屏蔽层,以及设置在下屏蔽层上方的非磁性绝缘体层。 非磁性绝缘体层具有在磁场下进行退火处理时抑制下屏蔽层的表面粗糙度劣化的功能,以便将下屏蔽层的磁特性改善为期望的磁特性。
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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.
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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
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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公开(公告)号:US20050276996A1
公开(公告)日:2005-12-15
申请号:US10664066
申请日:2003-09-16
申请人: Jongill Hong , Hitoshi Kanai , Junichi Kane , Kenji Noma
发明人: Jongill Hong , Hitoshi Kanai , Junichi Kane , Kenji Noma
CPC分类号: B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/39 , G11B5/3903 , G11B2005/3996 , H01F10/324 , H01F41/325 , Y10T428/1121 , Y10T428/1164 , Y10T428/1193
摘要: A magnetoresistive spin-valve sensor is constructed to include a magnetic layer, a specular layer made of a metal oxide, a back layer made of Au, Cu, AuCu, AgCu, AuAgCu or an alloy thereof and interposed between the magnetic layer and the specular layer, and a metal layer disposed adjacent to the specular layer, opposite to the back layer, and made of a metal which improves GMR performance of the magnetoresistive spin-valve sensor.
摘要翻译: 磁阻自旋阀传感器被构造为包括磁性层,由金属氧化物制成的镜面层,由Au,Cu,AuCu,AgCu,AuAgCu或其合金制成的背层,并且介于磁性层和镜面 并且与背层相对设置的与镜面层相邻的金属层,并且由改善磁阻自旋阀传感器的GMR性能的金属制成。
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公开(公告)号:US07087324B2
公开(公告)日:2006-08-08
申请号:US10664066
申请日:2003-09-16
申请人: Jongill Hong , Hitoshi Kanai , Junichi Kane , Kenji Noma
发明人: Jongill Hong , Hitoshi Kanai , Junichi Kane , Kenji Noma
IPC分类号: G11B5/127
CPC分类号: B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/39 , G11B5/3903 , G11B2005/3996 , H01F10/324 , H01F41/325 , Y10T428/1121 , Y10T428/1164 , Y10T428/1193
摘要: A magnetoresistive spin-valve sensor is constructed to include a magnetic layer, a specular layer made of a metal oxide, a back layer made of Au, Cu, AuCu, AgCu, AuAgCu or an alloy thereof and interposed between the magnetic layer and the specular layer, and a metal layer disposed adjacent to the specular layer, opposite to the back layer, and made of a metal which improves GMR performance of the magnetoresistive spin-valve sensor.
摘要翻译: 磁阻自旋阀传感器被构造为包括磁性层,由金属氧化物制成的镜面层,由Au,Cu,AuCu,AgCu,AuAgCu或其合金制成的背层,并且介于磁性层和镜面 并且与背层相对设置的与镜面层相邻的金属层,并且由改善磁阻自旋阀传感器的GMR性能的金属制成。
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