发明授权
- 专利标题: Writer shields with modified shapes for reduced flux shunting
- 专利标题(中): 作者盾牌具有改进的形状,用于减少通量分流
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申请号: US12806803申请日: 2010-08-20
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公开(公告)号: US08542461B2公开(公告)日: 2013-09-24
- 发明人: Zhigang Bai , Moris Dovek , Yan Wu
- 申请人: Zhigang Bai , Moris Dovek , Yan Wu
- 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: G11B5/147
- IPC分类号: G11B5/147 ; G11B5/187
摘要:
A perpendicular magnetic recording (PMR) head is fabricated with a configuration of leading edge shields and trailing edge shields that reduce the leakage of flux between the main pole and the shields. The reduction of leakage is achieved by eliminating the sharp 90° corner between the backside surfaces of the shields and the surfaces adjacent to the main pole. In one embodiment the corner is replaced by two successive acute angles, in another embodiment it is replaced by a rounded surface. In a final embodiment, leakage between the pole and trailing edge shield is achieved by shortening the length of the write gap by forming the shield with a double taper.
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