发明授权
US07800867B2 CPP GMR head with antiferromagnetic layer disposed at rear of ferrimagnetic pinned layer
有权
CPP GMR头，反铁磁层位于铁磁性钉扎层的后面
- 专利标题： CPP GMR head with antiferromagnetic layer disposed at rear of ferrimagnetic pinned layer
- 专利标题（中）： CPP GMR头，反铁磁层位于铁磁性钉扎层的后面
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申请号： US12548982申请日： 2009-08-27
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公开(公告)号： US07800867B2公开(公告)日： 2010-09-21
- 发明人: Masamichi Saito , Yoshihiro Nishiyama , Yosuke Ide , Eiji Umetsu , Naoya Hasegawa , Yasuo Hayakawa
- 申请人： Masamichi Saito , Yoshihiro Nishiyama , Yosuke Ide , Eiji Umetsu , Naoya Hasegawa , Yasuo Hayakawa
- 申请人地址： JP Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Brinks Hofer Gilson & Lione
- 优先权： JP2003-114189 20030418; JP2003-195159 20030710; JP2004-047757 20040224
- 主分类号： G11B5/39
- IPC分类号： G11B5/39
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.
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