发明授权
- 专利标题: Laminated film for head applications
- 专利标题(中): 用于头部应用的层压膜
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申请号: US11825034申请日: 2007-07-03
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公开(公告)号: US07773341B2公开(公告)日: 2010-08-10
- 发明人: Kunliang Zhang , Min Zheng , Min Li , Chen-Jung Chien , Cherng-Chyi Han
- 申请人: Kunliang Zhang , Min Zheng , Min Li , Chen-Jung Chien , Cherng-Chyi Han
- 申请人地址: US CA Milpitas
- 专利权人: Headway Technologies, Inc.
- 当前专利权人: Headway Technologies, Inc.
- 当前专利权人地址: US CA Milpitas
- 代理机构: Saile Ackerman LLC
- 代理商 Stephen B. Ackerman
- 主分类号: G11B5/33
- IPC分类号: G11B5/33
摘要:
A laminated main pole layer is disclosed in which a non-AFC scheme is used to break the magnetic coupling between adjacent high moment layers and reduce remanence in a hard axis direction while maintaining a high magnetic moment and achieving low values for Hch, Hce, and Hk. An amorphous material layer with a thickness of 3 to 20 Angstroms and made of an oxide, nitride, or oxynitride of one or more of Hf, Zr, Ta, Al, Mg, Zn, or Si is inserted between adjacent high moment stacks. The laminated structure also includes an alignment layer below each high moment layer within each stack. In one embodiment, a Ru coupling layer is inserted between two high moment layers in each stack to introduce an AFC scheme. An uppermost Ru layer is used as a CMP stop layer. A post annealing process may be employed to further reduce the anisotropy field (Hk).
公开/授权文献
- US20090009907A1 Laminated film for head applications 公开/授权日:2009-01-08
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