发明申请
- 专利标题: CPP giant magnetoresistive head including pinned magnetic layer that extends in the height direction
- 专利标题(中): CPP巨磁阻头包括在高度方向上延伸的钉扎磁性层
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申请号: US11141543申请日: 2005-05-31
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公开(公告)号: US20050270703A1公开(公告)日: 2005-12-08
- 发明人: Yasuo Hayakawa , Yoshihiro Nishiyama , Digo Aoki , Masamichi Saito , Naohiro Ishibashi , Kenji Honda
- 申请人: Yasuo Hayakawa , Yoshihiro Nishiyama , Digo Aoki , Masamichi Saito , Naohiro Ishibashi , Kenji Honda
- 专利权人: ALPS ELECTRIC CO., LTD.
- 当前专利权人: ALPS ELECTRIC CO., LTD.
- 优先权: JP2004-167391 20040604
- 主分类号: G11B5/39
- IPC分类号: G11B5/39 ; G11B5/127 ; G11B5/33 ; H01L43/08
摘要:
A CPP giant magnetoresistive head includes a lower shield layer; an upper shield layer; and a giant magnetoresistive element (GMR) between the lower shield layer and the upper shield layer. The GMR includes a nonmagnetic material layer; a pinned magnetic layer; and a free magnetic layer. The pinned layer and the free layer are laminated with the nonmagnetic layer provided therebetween. A current flows perpendicularly to a film plane of the GMR, the pinned magnetic layer extends in the height direction longer than in a track-width direction and includes a first portion in the GMR. The first portion is disposed above or below the nonmagnetic layer and the free layer. A second portion is behind the nonmagnetic layer and the free layer in the height direction. The first and second portions are in the same plane. The width of the pinned layer in the track-width direction in the first portion is greater than that in the second portion.
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