发明授权
US5737156A Barberpole MR sensor having interleaved permanent magnet and
magnetoresistive segments
失效
Barberpole MR传感器具有交错的永磁体和磁阻段
- 专利标题: Barberpole MR sensor having interleaved permanent magnet and magnetoresistive segments
- 专利标题(中): Barberpole MR传感器具有交错的永磁体和磁阻段
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申请号: US667276申请日: 1996-06-20
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公开(公告)号: US5737156A公开(公告)日: 1998-04-07
- 发明人: Peter I. Bonyhard
- 申请人: Peter I. Bonyhard
- 申请人地址: CA Scotts Valley
- 专利权人: Seagate Technology, Inc.
- 当前专利权人: Seagate Technology, Inc.
- 当前专利权人地址: CA Scotts Valley
- 主分类号: G01R33/09
- IPC分类号: G01R33/09 ; G11B5/39 ; G11B5/48
摘要:
A barberpole magnetoresistive (MR) sensor has a series of permanent magnet strips interleaved with a series of magnetoresistive strips. Conductive barberpole strips are canted across the sensor and connect one magnetoresistive strip, over a permanent magnet strip, to another magnetoresistive strip. The permanent magnet strips help to provide a uniform magnetic field throughout the sensor, thereby making the sensor more immune to harm from an external magnetic field and more likely to reset into a single magnetic domain oriented as desired if an external magnetic field should cause the sensor to fracture into multiple magnetic domains.
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