发明授权
- 专利标题: Magnetoresistive read transducer having improved bias profile
- 专利标题(中): 具有改进的偏置轮廓的磁阻读取传感器
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申请号: US843702申请日: 1992-02-28
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公开(公告)号: US5285339A公开(公告)日: 1994-02-08
- 发明人: Mao-Min Chen , Kochan Ju , Mohamad T. Krounbi , Ching H. Tsang , Po-Kang Wang
- 申请人: Mao-Min Chen , Kochan Ju , Mohamad T. Krounbi , Ching H. Tsang , Po-Kang Wang
- 申请人地址: NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: NY Armonk
- 主分类号: G11B5/39
- IPC分类号: G11B5/39 ; G11B5/127
摘要:
An MR read transducer having passive end regions separated by a central active region comprises an MR layer made from a material having a low uniaxial magnetic anisotropy. A soft magnetic bias layer is adjacent to but spaced from the MR layer in the central region only, and the soft magnetic bias layer is made from a material having a high uniaxial magnetic anisotropy. A longitudinal bias is produced directly in each of the end regions only, and the means for producing the longitudinal bias comprise a layer made from a material having a high uniaxial magnetic anisotropy. Control of the uniaxial anisotropy can be achieved by choosing materials of appropriate magnetostriction or intrinsic uniaxial anisotropy.
公开/授权文献
- US5775973A Method and apparatus for grinding the rim of a lens 公开/授权日:1998-07-07
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