发明授权
- 专利标题: PMR writer with π shaped shield
- 专利标题(中): PMR作家与pi形盾
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申请号: US12800039申请日: 2010-05-06
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公开(公告)号: US08432639B2公开(公告)日: 2013-04-30
- 发明人: Yan Wu , Kenichi Takano , Moris Dovek
- 申请人: Yan Wu , Kenichi Takano , Moris Dovek
- 申请人地址: US CA Milpitas
- 专利权人: Headway Technologies, Inc.
- 当前专利权人: Headway Technologies, Inc.
- 当前专利权人地址: US CA Milpitas
- 代理机构: Saile Ackerman LLC
- 代理商 Stephen B. Ackerman
- 主分类号: G11B5/10
- IPC分类号: G11B5/10 ; G11B5/31
摘要:
A perpendicular magnetic recording (PMR) head is fabricated with a pole tip shielded laterally by a pair of symmetrically separated side shields that extend from an edge of a trailing edge shield to form a shield with the shape of a π. The easy axis direction of the side shields is in the in-track direction. As a result, the side shields effectively shield the fringing fields of the magnetic pole tip from causing adjacent track erasures, while not adding their own fringing fields that could cause erasures even beyond adjacent tracks.
公开/授权文献
- US20110273798A1 PMR writer with pi shaped shield 公开/授权日:2011-11-10
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