发明授权
- 专利标题: Perpendicular magnetic recording head capable of suppressing PTP and obtaining stabilized recording medium and method of manufacturing the same
- 专利标题(中): 能够抑制PTP并获得稳定的记录介质的垂直磁记录头及其制造方法
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申请号: US11676139申请日: 2007-02-16
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公开(公告)号: US07742259B2公开(公告)日: 2010-06-22
- 发明人: Hiroshi Kameda , Kiyoshi Kobayashi
- 申请人: Hiroshi Kameda , Kiyoshi Kobayashi
- 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: JP2006-040539 20060217
- 主分类号: G11B5/39
- IPC分类号: G11B5/39
摘要:
Particularly, there is provided a perpendicular magnetic recording head capable of suppressing PTP and obtaining a stabilized recording ability by improving the shape of the opposed surface of a return yoke layer and a method of manufacturing the same. The shape of the return yoke layer on the opposed surface includes a downside formed linearly parallel to a track width direction (X direction shown in the drawing), a center portion where a protrusion portion having a maximum width T1 larger than a track width Tw by protruding upwardly is formed in a position opposed to a main magnetic pole layer in a film thickness direction (Z direction shown in the drawing), and opposed end portions, having a film thickness smaller than the center portion, that extend on the opposite sides in the track width direction of the center portion. As a result, it is possible to properly obtain both effects such as the improvement of the recording ability and the suppressing of PTP generation.
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