Invention Grant
- Patent Title: Thin film magnetic head having a pair of magnetic layers whose magnetization is controlled by shield layers
- Patent Title (中): 薄膜磁头具有一对磁性层,其磁化由屏蔽层控制
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Application No.: US12219841Application Date: 2008-07-29
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Publication No.: US08477461B2Publication Date: 2013-07-02
- Inventor: Tsutomu Chou , Yoshihiro Tsuchiya , Shinji Hara , Daisuke Miyauchi , Takahiko Machita
- Applicant: Tsutomu Chou , Yoshihiro Tsuchiya , Shinji Hara , Daisuke Miyauchi , Takahiko Machita
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Posz Law Group, PLC
- Main IPC: G11B5/39
- IPC: G11B5/39 ; G11B5/10

Abstract:
A thin film magnetic head including an MR laminated body composed of a first and second MR magnetic layers, first and second shield layers, and a bias magnetic field application layer provided on an opposite side of an air bearing surface (ABS) of the MR laminated body in order to apply a bias magnetic field orthogonal relative to the ABS. The first shield layer includes a first exchange coupling magnetic field application layer and a first antiferromagnetic layer; and the second shield layer includes a second exchange coupling magnetic field application layer and a second antiferromagnetic layer.
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