发明授权
- 专利标题: Thin film magnetic head
- 专利标题(中): 薄膜磁头
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申请号: US10667232申请日: 2003-09-18
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公开(公告)号: US07061726B2公开(公告)日: 2006-06-13
- 发明人: Shigekazu Ohtomo , Hiroshi Fukui , Sunao Yonekawa , Yoji Maruyama , Tadayuki Iwakura
- 申请人: Shigekazu Ohtomo , Hiroshi Fukui , Sunao Yonekawa , Yoji Maruyama , Tadayuki Iwakura
- 申请人地址: JP Odawara
- 专利权人: Hitachi Global Storage Technologies Japan, Ltd.
- 当前专利权人: Hitachi Global Storage Technologies Japan, Ltd.
- 当前专利权人地址: JP Odawara
- 代理机构: Townsend and Townsend and Crew LLP
- 优先权: JP2003-130983 20030509
- 主分类号: G11B5/127
- IPC分类号: G11B5/127
摘要:
A magnetic material having a low coefficient of thermal expansion of 11.5×10−6/K or less is used for forming at least one of a lower shield or an upper shield. A laminated film comprising a layer of the magnetic material having a low coefficient of thermal expansion of 11.5×10−6/K or less, and an 80 wt % NiFe alloy layer, is used for forming at least one of the lower shield and the upper shield. Thus, the thin film magnetic head having reduced after-record noise and reduced thermal protrusion can be obtained.
公开/授权文献
- US20040223265A1 Thin film magnetic head 公开/授权日:2004-11-11
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