发明申请
- 专利标题： Magnetic write head having a wider trailing edge pole structure
- 专利标题（中）： 具有较宽后缘极结构的磁写头
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申请号： US11229160申请日： 2005-09-16
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公开(公告)号： US20060012915A1公开(公告)日： 2006-01-19
- 发明人: Cherng-Chyi Han , Mao-Min Chen , Po Wang , Fenglin Liu
- 申请人： Cherng-Chyi Han , Mao-Min Chen , Po Wang , Fenglin Liu
- 专利权人： HEADWAY TECHNOLOGIES, INC.
- 当前专利权人： HEADWAY TECHNOLOGIES, INC.
- 主分类号： G11B5/147
- IPC分类号： G11B5/147
摘要：
A trimmed upper pole piece for a magnetic write head, said pole piece having a tapered profile that is widest at its trailing edge. Such a pole piece is capable of writing narrow tracks with sharply and well defined patterns and minimal overwriting of adjacent tracks. The necessary taper is produced by using NiCr, NiFeCr, Rh or Ru as write gap filling materials which have an etch rate which is substantially equal to the etch rate of the other layers forming the pole piece and are highly corrosion resistant. As a result, the write gap does not protrude to mask the effects of the ion-beam etch used to form the taper.