发明授权
- 专利标题: Perpendicular magnetic recording head having a non-magnetic film recessed from the air bearing surface for improved high-density magnetic recording
- 专利标题(中): 具有从空气轴承表面凹陷的非磁性膜的垂直磁记录头用于改善高密度磁记录
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申请号: US12827999申请日: 2010-06-30
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公开(公告)号: US08542462B2公开(公告)日: 2013-09-24
- 发明人: Yohji Maruyama , Tadayuki Iwakura , Tetsuya Okai , Hiromi Shiina , Kazue Kudo
- 申请人: Yohji Maruyama , Tadayuki Iwakura , Tetsuya Okai , Hiromi Shiina , Kazue Kudo
- 申请人地址: NL Amsterdam
- 专利权人: HGST Netherlands B.V.
- 当前专利权人: HGST Netherlands B.V.
- 当前专利权人地址: NL Amsterdam
- 代理机构: Zilka-Kotab, PC
- 优先权: JP2009-159172 20090703
- 主分类号: G11B5/127
- IPC分类号: G11B5/127
摘要:
According to one embodiment, a perpendicular magnetic recording head includes a main magnetic pole having a trailing side and two lateral sides, a magnetic shield near the trailing side and both lateral sides of the main magnetic pole, the magnetic shield comprising: a first soft magnetic film with a relatively high saturation flux density positioned facing depthwise from a floating surface side thereof, a second soft magnetic film with a relatively low saturation flux density, and a first non-magnetic film. The head also includes a non-magnetic film interposed between the magnetic shield and the main magnetic pole, a first magnetic film magnetically coupled to the magnetic shield and the main magnetic pole on a side opposite a floating surface side thereof, and a coil surrounding a magnetic circuit, the magnetic circuit comprising the main magnetic pole and the first magnetic film. Other systems and methods are also described.
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