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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：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：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：US5717630A
公开(公告)日：1998-02-10
申请号：US630993
申请日：1996-04-12
申请人： Takao Koshikawa , Yukinori Ikegawa , Hiroshi Maeda , Yoshinori Ohtsuka , Takahiro Imamura , Yoshifumi Mizoshita
发明人： Takao Koshikawa , Yukinori Ikegawa , Hiroshi Maeda , Yoshinori Ohtsuka , Takahiro Imamura , Yoshifumi Mizoshita
IPC分类号： G01R33/09 , G01Q60/10 , G01Q80/00 , G01R33/07 , G01R33/10 , G11B5/00 , G11B5/127 , G11B5/33 , G11B5/35 , G11B5/37 , G11B5/39 , G11B5/48 , G11B5/54 , G11B9/00 , H01L43/08
CPC分类号： G11B5/00 , G11B5/1278 , G11B5/332 , G11B5/3903 , G11B5/3925 , G11B5/3967 , G11B5/398 , G11B5/48 , G11B5/54 , B82Y10/00 , G11B9/1436 , Y10S977/865
摘要： A magnetic memory device comprises: a vertically magnetic recording medium; a probe formed of an electrically conductive as well as soft-magnetic material, a pointed end of the probe faces the magnetically recording medium across a gap; a magnetic flux detecting element for detecting a magnetic flux caught by the probe, where the magnetic flux is from a data recorded on the magnetically recording medium; a vertical controller for keeping the gap constant by the use of a tunnel current flowing via said gap into the probe while a voltage is applied across the gap; and a scan mechanism for scanning the probe along the magnetically recording medium. The magnetic memory device may further comprises an exciting coil for magnetizing the probe so as to write a data in the magnetically recording medium. The probe may be recessed from the scanning position when the probe is not in operation.
摘要翻译： 磁存储器件包括：垂直磁记录介质; 由导电以及软磁材料形成的探针，探针的尖端通过间隙面向磁记录介质; 磁通检测元件，用于检测由所述探针捕获的磁通量，其中所述磁通量来自记录在所述磁记录介质上的数据; 垂直控制器，用于通过在跨过间隙施加电压的情况下通过使用经由所述间隙流入探针的隧道电流来保持间隙恒定; 以及用于沿着磁记录介质扫描探针的扫描机构。 磁存储器件还可以包括用于磁化探针的激励线圈，以便将数据写入磁记录介质。 当探头不工作时，探头可能会从扫描位置凹陷。
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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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7.发明授权Magnetic recording medium and method of forming the same and magnetic disk drive 失效磁记录介质及其形成方法及磁盘驱动器
公开(公告)号：US6055139A
公开(公告)日：2000-04-25
申请号：US762207
申请日：1996-12-09
CPC分类号： B82Y10/00 , G11B5/59633 , G11B5/59688 , G11B5/66 , G11B5/743 , G11B5/82 , G11B5/855
摘要： A magnetic recording medium having magnetic patterns into which servo information are written and a magnetic recording layer into which data are written comprises a nonmagnetic substrate, a magnetic recording layer formed on the substrate, and a hard magnetic layer contacted the magnetic recording layer within servo signal recording regions on the substrate and constituting servo patterns of film thicknesses of which are varied in the track length direction. Thereby, more precise reading of the servo signals by the magnetic head is assured and a surface of the magnetic recording medium can be flatted.
摘要翻译： 具有写入伺服信息的磁图案的磁记录介质和写入数据的磁记录层包括非磁性基板，形成在基板上的磁记录层，以及与伺服信号中的磁记录层接触的硬磁层 记录在基板上的区域，并且构成其厚度在光纤长度方向上变化的伺服图案。 因此，确保了通过磁头更精确地读取伺服信号，并且可以使磁记录介质的表面平坦化。
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公开(公告)号：US5793560A
公开(公告)日：1998-08-11
申请号：US358402
申请日：1994-12-19
IPC分类号： G11B5/008 , G11B5/012 , G11B5/48 , G11B5/53 , G11B5/54 , G11B5/55 , G11B25/04 , H02K7/14 , H02N1/00 , G11B21/02
CPC分类号： G11B5/5521 , G11B25/04 , G11B5/00804 , G11B5/012 , G11B5/488 , G11B5/53 , G11B5/54 , G11B5/55 , G11B5/553 , H02K7/14 , H02N1/004 , H02N1/008 , H02K99/00
摘要： A storage device includes a substrate, a magnetic storage medium provided on the substrate, information being magnetically stored in the magnetic storage medium, a head unit, and a reciprocating mechanism provided on the substrate, the reciprocating mechanism causing the head unit to reciprocate in a plane parallel to a surface of the magnetic storage medium, wherein, while the head unit is being moved by the reciprocating mechanism, information is recorded in or reproduced from the magnetic storage medium via the head unit.
摘要翻译： 存储装置包括基板，设置在基板上的磁存储介质，磁存储在磁存储介质中的信息，磁头单元和设置在基板上的往复机构，所述往复机构使磁头单元在 平行于磁存储介质的表面的平面，其中，当头单元通过往复机构移动时，信息经由头单元记录在磁存储介质中或从磁存储介质再现。
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9.发明授权Magnetic recording medium having linear or curved tracking servo patterns formed obliquely relative to direction of tracks, and magnetic recording apparatus using the same 有权具有相对于轨道方向倾斜地形成的线性或弯曲跟踪伺服图案的磁记录介质，以及使用其的磁记录装置公开(公告)号：US06324032B1
公开(公告)日：2001-11-27
申请号：US09307458
申请日：1999-05-07
IPC分类号： G11B574
CPC分类号： B82Y10/00 , G11B5/59633 , G11B5/59688 , G11B5/66 , G11B5/743 , G11B5/82 , G11B5/855
摘要： A magnetic recording medium having magnetic patterns into which servo information are written and a magnetic recording layer into which data are written comprises a nonmagnetic substrate, a magnetic recording layer formed on the substrate, and a hard magnetic layer contacting the magnetic recording layer within servo signal recording regions on the substrate and constituting servo patterns of film thicknesses of which are varied in the track length direction. Thereby, more precise reading of the servo signals by the magnetic head is assured and a surface of the magnetic recording medium can be flattend.
摘要翻译： 具有写入伺服信息的磁图案的磁记录介质和写入数据的磁记录层包括非磁性基板，形成在基板上的磁记录层和在伺服信号内与磁记录层接触的硬磁层 记录在基板上的区域，并且构成其厚度在光纤长度方向上变化的伺服图案。 因此，确保了通过磁头更精确地读取伺服信号，并且磁记录介质的表面可以变平。
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10.发明授权Magneto-resistive effect type head with step or protrusion for reducing thermal asperity 失效磁阻效应型头部具有台阶或突起，用于减少热凹凸
公开(公告)号：US5896243A
公开(公告)日：1999-04-20
申请号：US749103
申请日：1996-11-14
IPC分类号： G11B5/012 , G11B5/10 , G11B5/105 , G11B5/31 , G11B5/39 , G11B5/40 , G11B5/48 , G11B5/60 , G11B21/21 , G11B23/00 , G11B5/187 , G11B5/255
CPC分类号： G11B5/3906 , G11B5/10 , G11B5/102 , G11B5/105 , G11B5/39 , G11B5/3903 , G11B5/3967 , G11B5/40 , G11B5/4886 , G11B23/0007 , G11B5/012 , G11B5/3103 , G11B5/3106 , G11B5/6005
摘要： To suppress the thermal asperity in the magneto-resistive effect type head for carrying out the reproduction of signals from the recording medium by the element 2 while moving, in a flying or contact state with the recording medium, in a predetermined direction relative to the recording medium. A step 20 or a protrusion 21 which is closer to the recording medium than the element is provided on the air bearing surface of the head in an area on the leading side of the element with respect to the moving direction of the head.
摘要翻译： 为了抑制磁阻效应型头中的热凹凸，用于在与记录介质的飞行或接触状态下相对于记录在预定方向上移动时执行从记录介质再现信号 中。 相对于头部的移动方向，在元件前侧的区域中，在头部的空气轴承表面上设置有比元件更靠近记录介质的台阶20或突起21。
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