发明申请
- 专利标题： Perpendicular magnetic recording head with a bottom side shield
- 专利标题（中）： 垂直磁记录头带底侧屏蔽
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申请号： US13135276申请日： 2011-06-30
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公开(公告)号： US20110261486A1公开(公告)日： 2011-10-27
- 发明人: Cherng-Chyi Han , Min Li , Fenglin Liu , Lijie Guan
- 申请人： Cherng-Chyi Han , Min Li , Fenglin Liu , Lijie Guan
- 专利权人： Headway Technologies, Inc.
- 当前专利权人： Headway Technologies, Inc.
- 主分类号： G11B5/187
- IPC分类号： G11B5/187
摘要：
A perpendicular magnetic recording (PMR) head has a pole tip shielded laterally by a separated pair of bottom side shields and shielded from above by an upper shield. The bottom side shields surround a lower portion of the pole tip while the upper portion of the pole tip is surrounded by non-magnetic layers. The bottom shields and the non-magnetic layer form a wedge-shaped trench in which the pole tip has been formed by a self-aligned plating process. A write gap layer and an upper shield is formed above the side shields and pole. The resulting structure substantially eliminates track overwrite while maintaining good track definition.
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