Invention Grant
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
- Patent Title: CPP GMR head with antiferromagnetic layer disposed at rear of ferrimagnetic pinned layer
- Patent Title (中): CPP GMR头,反铁磁层位于铁磁性钉扎层的后面
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Application No.: US12548982Application Date: 2009-08-27
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Publication No.: US07800867B2Publication Date: 2010-09-21
- Inventor: Masamichi Saito , Yoshihiro Nishiyama , Yosuke Ide , Eiji Umetsu , Naoya Hasegawa , Yasuo Hayakawa
- Applicant: Masamichi Saito , Yoshihiro Nishiyama , Yosuke Ide , Eiji Umetsu , Naoya Hasegawa , Yasuo Hayakawa
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Brinks Hofer Gilson & Lione
- Priority: JP2003-114189 20030418; JP2003-195159 20030710; JP2004-047757 20040224
- Main IPC: G11B5/39
- IPC: G11B5/39

Abstract:
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.
Public/Granted literature
- US20090316308A1 SELF-PINNED CPP GIANT MAGNETORESISTIVE HEAD WITH ANTIFERROMAGNETIC FILM ABSENT FROM CURRENT PATH Public/Granted day:2009-12-24
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