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268 条记录 (耗时 0.035 秒)

    Method for manufacturing exchange bias type magnetic field sensing element
    3.
    发明授权
    Method for manufacturing exchange bias type magnetic field sensing element 失效
    交换偏置型磁场感应元件的制造方法

    公开(公告)号：US06757962B2

    公开(公告)日：2004-07-06

    申请号：US10013242

    申请日：2001-12-10

    申请人： Naoya Hasegawa ,  Eiji Umetsu ,  Masamichi Saito ,  Kenichi Tanaka ,  Yosuke Ide

    发明人： Naoya Hasegawa ,  Eiji Umetsu ,  Masamichi Saito ,  Kenichi Tanaka ,  Yosuke Ide

    IPC分类号： H04R3100

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  B82Y40/00 ,  G01R33/093 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3967 ,  H01F41/308 ,  H01F41/325 ,  Y10T29/49032 ,  Y10T29/49034 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048

    摘要： In a method for manufacturing a magnetic field sensing element including an electrode layer overlying a second antiferrogmagnetic layer and a first free magnetic layer where the electrode layer exposes a portion of the second magnetic layer, a portion of the second antiferromagnetic layer not covered with the electrode layer and a portion of the first free magnetic layer are removed using the electrode layer as a mask after laminating each layer to form a bottom type spin-valve thin film magnetic element, thereby enabling the first free magnetic layer to be endowed with a sufficient exchange coupling magnetic field by substantially eliminating the tapered portion of the remaining second antiferromagnetic layer thereby enabling the magnetization of the second free magnetic layer to be put into a single domain state.

    摘要翻译： 在制造磁场感测元件的方法中，包括覆盖第二反铁磁层的电极层和第一自由磁性层，其中电极层暴露第二磁性层的一部分，第二反铁磁层的一部分未被电极覆盖 在层叠各层之后，使用电极层作为掩模去除第一自由磁性层的一部分和第一自由磁性层的一部分，从而形成底部型自旋阀薄膜磁性元件，从而能够赋予第一自由磁性层充分的交换 通过基本上消除剩余的第二反铁磁性层的锥形部分来耦合磁场，从而使得第二自由磁性层的磁化能够进入单一畴状态。

    Magnetic sensing element with improved sensitivity and method for making the same
    6.
    发明授权
    Magnetic sensing element with improved sensitivity and method for making the same 失效
    具有改进灵敏度的磁感应元件及其制造方法

    公开(公告)号：US06893734B2

    公开(公告)日：2005-05-17

    申请号：US10017301

    申请日：2001-12-14

    申请人： Naoya Hasegawa ,  Eiji Umetsu ,  Masamichi Saito ,  Kenichi Tanaka ,  Yosuke Ide

    发明人： Naoya Hasegawa ,  Eiji Umetsu ,  Masamichi Saito ,  Kenichi Tanaka ,  Yosuke Ide

    IPC分类号： G01R33/09 ,  G11B5/39

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B2005/3996 ,  Y10T428/1171 ,  Y10T428/12465 ,  Y10T428/12646 ,  Y10T428/12931 ,  Y10T428/12986 ,  Y10T428/24479 ,  Y10T428/265

    摘要： A magnetic sensing element includes a laminate, the laminate including a first antiferromagnetic layer; a pinned magnetic layer, the magnetization direction thereof being pinned by the first antiferromagnetic layer; a nonmagnetic conductive layer; a free magnetic layer, the magnetization direction thereof being variable in response to an external magnetic field; a nonmagnetic interlayer; a ferromagnetic layer; and a second antiferromagnetic layer. The laminate has a recess extending through the second antiferromagnetic layer and the ferromagnetic layer, a bottom face of the recess lying in the nonmagnetic interlayer, the width of the bottom face in a track width direction being equal to a track width. The free magnetic layer is magnetized in a direction substantially orthogonal to the magnetization direction of the pinned magnetic layer as a result of magnetic coupling with the ferromagnetic layer. A method for making such a magnetic sensing element is also disclosed.

    摘要翻译： 磁传感元件包括层压体，层压体包括第一反铁磁性层; 被钉扎的磁性层，其磁化方向由第一反铁磁层固定; 非磁性导电层; 自由磁性层，其磁化方向响应于外部磁场而变化; 非磁性中间层; 铁磁层; 和第二反铁磁层。 层压体具有延伸穿过第二反铁磁层和铁磁层的凹部，位于非磁性中间层中的凹部的底面，轨道宽度方向上的底面的宽度等于轨道宽度。 由于与铁磁层的磁耦合，自由磁性层在与被钉扎的磁性层的磁化方向大致正交的方向上被磁化。 还公开了一种用于制造这种磁传感元件的方法。

    Self-pinned CPP giant magnetoresistive head with antiferromagnetic film absent from current path
    9.
    发明授权
    Self-pinned CPP giant magnetoresistive head with antiferromagnetic film absent from current path 有权
    具有反铁磁膜的自固定CPP巨磁阻磁头，不存在电流路径

    公开(公告)号：US07599155B2

    公开(公告)日：2009-10-06

    申请号：US10823474

    申请日：2004-04-13

    申请人： Masamichi Saito ,  Yoshihiro Nishiyama ,  Yosuke Ide ,  Eiji Umetsu ,  Naoya Hasegawa ,  Yasuo Hayakawa

    发明人： Masamichi Saito ,  Yoshihiro Nishiyama ,  Yosuke Ide ,  Eiji Umetsu ,  Naoya Hasegawa ,  Yasuo Hayakawa

    IPC分类号： G11B5/39

    CPC分类号： G11B5/3903 ,  G11B5/3163 ,  G11B5/398

    摘要： A CPP giant magnetoresistive head includes lower and upper shield layers, and a giant magnetoresistive element disposed between the upper and lower shield layers and including a pinned magnetic layer, a free magnetic layer and a nonmagnetic layer disposed between the pinned magnetic layer and the free magnetic layer. In the CPP giant magnetoresistive head, the pinned magnetic layer extends to the rear of the nonmagnetic layer and the free magnetic layer in the height direction, and the dimension of the pinned magnetic layer in the height direction is larger than that in the track width direction. Also, the pinned magnetic layer comprises a magnetic material having a positive magnetostriction constant or a magnetic material having high coercive force, and the end of the pinned magnetic layer is exposed at a surface facing a recording medium.

    摘要翻译： CPP巨磁阻头包括下屏蔽层和上屏蔽层，以及设置在上屏蔽层和下屏蔽层之间的巨磁阻元件，包括固定磁性层，自由磁性层和设置在被钉扎的磁性层和自由磁性层之间的非磁性层 层。 在CPP巨磁阻磁头中，被钉扎的磁性层在高度方向上延伸到非磁性层的后部和自由磁性层，并且被钉扎的磁性层在高度方向上的尺寸大于轨道宽度方向上的尺寸 。 此外，钉扎磁性层包括具有正的磁致伸缩常数的磁性材料或具有高矫顽力的磁性材料，并且被钉扎的磁性层的端部在面向记录介质的表面上暴露。

    Magnetic detecting element having antiferromagnetic film having predetermined space in track width direction and method for manufacturing the same
    10.
    发明授权
    Magnetic detecting element having antiferromagnetic film having predetermined space in track width direction and method for manufacturing the same 失效
    磁性检测元件具有在磁道宽度方向上具有预定空间的反铁磁膜及其制造方法

    公开(公告)号：US07045224B2

    公开(公告)日：2006-05-16

    申请号：US10675435

    申请日：2003-09-30

    申请人： Naoya Hasegawa ,  Eiji Umetsu ,  Masamichi Saito ,  Yosuke Ide

    发明人： Naoya Hasegawa ,  Eiji Umetsu ,  Masamichi Saito ,  Yosuke Ide

    IPC分类号： G11B5/127

    CPC分类号： B82Y25/00 ,  G01R33/093 ,  Y10T428/1129 ,  Y10T428/1143 ,  Y10T428/115 ,  Y10T428/1157 ,  Y10T428/1171 ,  Y10T428/1193

    摘要： The present invention provides a magnetic detecting element including a pinned magnetic layer and a first antiferromagnetic layer which constitutes an exchange coupling film and the structures of which are optimized for properly pinning magnetization of the pinned magnetic layer, improving reproduction output and properly complying with a narrower gap, and a method of manufacturing the magnetic detecting element. The pinned magnetic layer has a synthetic ferrimagnetic structure, and the first antiferromagnetic layer has a predetermined space C formed at the center in the track width direction to produce exchange coupling magnetic fields only between the first antiferromagnetic layer and both side portions of a first magnetic layer of the pinned magnetic layer. Therefore, the magnetization of the pinned magnetic layer can be pinned, and an improvement in reproduction output and gap narrowing can be realized. Furthermore, a magnetic detecting element with high resistance to electrostatic damage (ESD) can be manufactured. Thus, a magnetic detecting element adaptable for a future higher recording density can be provided.

    摘要翻译： 本发明提供了一种磁检测元件，其包括钉扎磁性层和构成交换耦合膜的第一反铁磁层，其结构被优化以适当地钉扎钉扎磁性层的磁化，提高再生产量并适当地符合较窄的 间隙，以及制造磁检测元件的方法。 钉扎磁性层具有合成亚铁磁性结构，第一反铁磁性层具有形成在轨道宽度方向中心的预定空间C，仅在第一反铁磁性层与第一磁性层的两侧部之间产生交换耦合磁场 的固定磁性层。 因此，可以使被钉扎的磁性层的磁化被固定，并且可以实现再现输出和间隙变窄的改善。 此外，可以制造具有高抗静电损伤（ESD）的磁性检测元件。 因此，可以提供适用于将来更高记录密度的磁检测元件。