发明授权
- 专利标题: PMR writer device with multi-level tapered write pole
- 专利标题(中): PMR写入器,具有多级锥形写入极
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申请号: US12387534申请日: 2009-05-04
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公开(公告)号: US08264792B2公开(公告)日: 2012-09-11
- 发明人: Zhigang Bai , Kowang Liu , Yan Wu , Moris Dovek
- 申请人: Zhigang Bai , Kowang Liu , Yan Wu , 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: G11B5/31
- IPC分类号: G11B5/31
摘要:
A perpendicular magnetic recording (PMR) head is fabricated with a multi-level tapered write pole for efficient channeling of magnetic flux. The write pole comprises a main pole with a tapered tip on which is formed at least one yoke that has a tapered edge. The edge of the yoke is recessed from the ABS of the tapered tip, giving the write pole a stepped profile. The tapered tip can be two sloped surfaces that are symmetric about a mid-plane of the main pole or a single sloped edge on the leading side or the trailing side of the pole. The yoke structure can consist of a single yoke formed on one side of the main pole or it can consist of two yokes formed symmetrically on both the leading and trailing sides of the main pole.
公开/授权文献
- US20100277832A1 PMR writer device with multi-level tapered write pole 公开/授权日:2010-11-04
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