发明授权
US07379268B2 Thin-film magnetic head including non-magnetic layer for maintaining flatness of the top surface of pole portion layer
失效
包括非磁性层的薄膜磁头,用于保持磁极部分层的顶表面的平坦度
- 专利标题: Thin-film magnetic head including non-magnetic layer for maintaining flatness of the top surface of pole portion layer
- 专利标题(中): 包括非磁性层的薄膜磁头,用于保持磁极部分层的顶表面的平坦度
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申请号: US09985604申请日: 2001-11-05
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公开(公告)号: US07379268B2公开(公告)日: 2008-05-27
- 发明人: Yoshikazu Sato , Tetsuya Roppongi , Yuichi Watabe
- 申请人: Yoshikazu Sato , Tetsuya Roppongi , Yuichi Watabe
- 申请人地址: JP Tokyo
- 专利权人: TDK Corporation
- 当前专利权人: TDK Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Oliff & Berridge, PLC
- 优先权: JP2000-343245 20001110; JP2000-344507 20001110; JP2001-014950 20010123
- 主分类号: G11B5/31
- IPC分类号: G11B5/31
摘要:
A thin-film magnetic head comprises first and second magnetic layers, a gap layer provided between the first and second magnetic layers, a coupling portion for magnetically coupling the first and second magnetic layers to each other at a distance from a medium facing surface ABS, and a thin-film coil, part of which is disposed between the first and second magnetic layers. The second magnetic layer has a pole portion layer and a yoke portion layer. The thin-film magnetic head further comprises a non-magnetic layer that is in contact with the surface of the pole portion layer farther from the gap layer. The non-magnetic layer prevents the surface of the pole portion layer farther from the gap layer from being damaged during the manufacturing process of the head, and thereby maintains the flatness of the surface.
公开/授权文献
- US20020109946A1 Thin-film magnetic head and method of manufacturing same 公开/授权日:2002-08-15
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