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268 条记录 (耗时 0.041 秒)

    Self-pinned CPP giant magnetoresistive head with antiferromagnetic film absent from current path
    65.
    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
    68.
    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。

    Magnetic sensor having free layer additionally provided with magnetic anisotropy by shape anisotropy
    69.
    发明授权
    Magnetic sensor having free layer additionally provided with magnetic anisotropy by shape anisotropy 失效
    具有自由层的磁传感器通过形状各向异性另外具有磁各向异性

    公开(公告)号：US07029771B2

    公开(公告)日：2006-04-18

    申请号：US10671970

    申请日：2003-09-26

    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 ,  B32B3/02 ,  B32B15/04 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  H01F10/123 ,  H01F10/3268 ,  Y10T428/1143 ,  Y10T428/115 ,  Y10T428/1157 ,  Y10T428/1193

    摘要： An intermediate region is formed at a central portion of an element in a track width direction, and an antiferromagnetic layer is not provided at the intermediate region. Accordingly, a sense current can be prevented from being shunted to the intermediate region, and as a result, improvement in reproduction output and strength against magnetic electrostatic damage can be realized. In addition, since the thickness of the central portion of the element is decreased, trend toward narrower gap can be realized. Furthermore, since the direction of magnetization of a free magnetic layer is oriented in the track width direction by shape anisotropy, means for orienting the magnetization is not necessary, and hence the structure and manufacturing method of the element can be simplified.

    摘要翻译： 在轨道宽度方向上的元件的中央部形成中间区域，在中间区域不设置反铁磁层。 因此，可以防止感测电流被分流到中间区域，结果，可以实现再现输出的提高和抗静电损伤的强度。 此外，由于元件的中心部分的厚度减小，可以实现更窄的间隙的趋势。 此外，由于自由磁性层的磁化方向通过形状各向异性在磁道宽度方向上取向，因此不需要用于定向磁化的装置，因此可以简化元件的结构和制造方法。