发明授权
- 专利标题： Magnetic head having write pole, first soft magnetic films separately disposed on both sides of the main pole, and a second soft magnetic film disposed on a trailing side of the main pole
- 专利标题（中）： 具有写极的磁头，分别设置在主极两侧的第一软磁膜和设置在主极的后侧的第二软磁膜
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申请号： US12070155申请日： 2008-02-15
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公开(公告)号： US08300358B2公开(公告)日： 2012-10-30
- 发明人: Yohji Maruyama , Tadayuki Iwakura , Kimitoshi Etoh , Hiromi Shiina , Kazue Kudo
- 申请人： Yohji Maruyama , Tadayuki Iwakura , Kimitoshi Etoh , Hiromi Shiina , Kazue Kudo
- 申请人地址： NL Amsterdam
- 专利权人： Hitachi Global Storage Technologies Netherlands B.V.
- 当前专利权人： Hitachi Global Storage Technologies Netherlands B.V.
- 当前专利权人地址： NL Amsterdam
- 代理机构： Zilka-Kotab, PC
- 优先权： JP2007-036288 20070216
- 主分类号： G11B5/127
- IPC分类号： G11B5/127
摘要：
Embodiments of the present invention help to suppress broadening of a write field of a main pole of a perpendicular recording head and realize high-quality write operation. According to one embodiment, a main pole of a write head extends to an air bearing surface or a medium-facing surface and has an inverted trapezoid in cross-section. First soft magnetic films called side shields are separately disposed through a nonmagnetic film on both sides of the main pole. The air bearing surface side end of the first soft magnetic film is provided to recede from the air bearing surface. The first soft magnetic film and the main pole are formed in the same layer. A second soft magnetic film called a trailing shield is provided above the main pole on the air bearing surface side via a nonmagnetic film.
公开/授权文献
- US20080198507A1 Magnetic head and method of manufacturing the same 公开/授权日：2008-08-21
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