发明申请
US20110097601A1 Wrap-around shielded writer with highly homogeneous shield material
有权
带有高度均匀的屏蔽材料的环绕屏蔽作者
- 专利标题: Wrap-around shielded writer with highly homogeneous shield material
- 专利标题(中): 带有高度均匀的屏蔽材料的环绕屏蔽作者
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申请号: US12589597申请日: 2009-10-26
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公开(公告)号: US20110097601A1公开(公告)日: 2011-04-28
- 发明人: Zhigang Bai , Yan Wu , Moris Dovek , Cherng Chyi Han
- 申请人: Zhigang Bai , Yan Wu , Moris Dovek , Cherng Chyi Han
- 专利权人: Headway Technologies, Inc.
- 当前专利权人: Headway Technologies, Inc.
- 主分类号: G11B5/33
- IPC分类号: G11B5/33
摘要:
A perpendicular magnetic recording (PMR) head is fabricated with a main pole shielded laterally by a pair of side shields, shielded above by a trailing shield and shielded optionally below by a leading shield. The shields and the seed layers on which they are formed are formed of materials having substantially the same physical characteristics including the same material composition, the same hardness, the same response to processes such as ion beam etching (IBE), chemical mechanical polishing (CMP), mechanical lapping, such as the slider ABS lapping, the same coefficient of thermal expansion (CTE) as well as the same Bs. Optionally, the trailing shield may be formed on a high Bs seed layer to provide the write head with improved down-track performance.
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