发明申请
- 专利标题： Thin film magnetic head having lower auxiliary magnetic pole on lower magnetic pole layer
- 专利标题（中）： 薄膜磁头在下磁极层上具有较低的辅助磁极
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申请号： US10619859申请日： 2003-07-15
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公开(公告)号： US20050013045A1公开(公告)日： 2005-01-20
- 发明人: Minoru Hasegawa , Yoshinori Ohtsuka
- 申请人： Minoru Hasegawa , Yoshinori Ohtsuka
- 专利权人： FUJITSU LIMITED
- 当前专利权人： FUJITSU LIMITED
- 主分类号： G11B5/31
- IPC分类号： G11B5/31 ; G11B5/147
摘要：
A depression is formed on the surface of a lower magnetic pole layer in a thin film magnetic head. A lower auxiliary magnetic pole is defined in the lower magnetic pole layer between the depression and a medium-opposed surface of a head slider. The depression is filled up with a non-magnetic material. When the thin film magnetic head is to be formed, no magnetic layer is formed on the lower magnetic pole layer for forming the lower auxiliary magnetic pole. A dry process such as sputtering and vapor-deposition can be employed to form the lower magnetic pole layer, so that a wider choice can be provided for the material of the lower magnetic pole layer and the lower auxiliary magnetic pole.
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