发明授权
- 专利标题: Perpendicular magnetic recording head having return path layer and gap adjusting layer
- 专利标题(中): 具有返回路径层和间隙调整层的垂直磁记录头
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申请号: US11460922申请日: 2006-07-28
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公开(公告)号: US07692896B2公开(公告)日: 2010-04-06
- 发明人: Hiroshi Kameda , Hisayuki Yazawa
- 申请人: Hiroshi Kameda , Hisayuki Yazawa
- 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: Brinks Hofer Gilson & Lione
- 优先权: JP2005-238912 20050819
- 主分类号: G11B5/147
- IPC分类号: G11B5/147
摘要:
A perpendicular magnetic recording head includes a main pole layer and a return path layer that are exposed from a medium-facing surface of the recording head facing a recording medium and that face each other with a predetermined gap therebetween at the medium-facing surface. A coil layer applies a recording magnetic field to the main pole layer and the return path layer. The return path layer includes a gap adjusting layer and a main layer stacked in that order from a side facing the main pole layer. The gap adjusting layer is positioned so as to face the main pole layer and the recording medium, and is made of a magnetic material having a resistivity lower than resistivities of the main layer and the main pole layer.
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