发明授权
- 专利标题： Method of increasing CPP GMR in a spin valve structure
- 专利标题（中）： 在自旋阀结构中增加CPP GMR的方法
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申请号： US10718373申请日： 2003-11-20
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公开(公告)号： US07016168B2公开(公告)日： 2006-03-21
- 发明人: Min Li , Kochan Ju , Youfeng Zheng , Simon Liao , Jeiwei Chang
- 申请人： Min Li , Kochan Ju , Youfeng Zheng , Simon Liao , Jeiwei Chang
- 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
- 代理商 George O. Saile; Stephen B. Ackerman
- 主分类号： G11B5/39
- IPC分类号： G11B5/39
摘要：
A current-perpendicular-to-plane (CPP) giant magnetoresistive (GMR) sensor of the synthetic spin valve type is provided, the sensor comprising a GMR stack having a substantially square lateral cross-section, a Cu spacer layer of smaller square cross-section formed centrally on the GMR stack and a capped ferromagnetic free layer of substantially square, but even smaller cross-sectional area, formed centrally on the spacer layer. The stepped, reduced area geometry of the sensor provides a significant improvement in its GMR ratio (DR/R), a reduced resistance, R, and elimination of Joule heating hot-spots in regions of high resistance such as the antiferromagnetic pinning layer and its seed layer.
公开/授权文献
- US20050111148A1 Method of increasing CPP GMR in a spin valve structure 公开/授权日：2005-05-26
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