发明授权
- 专利标题: Low permeability material for a side shield in a perpendicular magnetic head
- 专利标题(中): 用于垂直磁头中侧屏蔽的低磁导率材料
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申请号: US13168083申请日: 2011-06-24
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公开(公告)号: US08570683B2公开(公告)日: 2013-10-29
- 发明人: Yusuke Takahashi , Hiromi Shiina , Kazue Kudo , Yohji Maruyama , Kaori Suzuki
- 申请人: Yusuke Takahashi , Hiromi Shiina , Kazue Kudo , Yohji Maruyama , Kaori Suzuki
- 申请人地址: NL Amsterdam
- 专利权人: HGST Netherlands B.V.
- 当前专利权人: HGST Netherlands B.V.
- 当前专利权人地址: NL Amsterdam
- 代理机构: Zilka-Kotab, PC
- 主分类号: G11B5/127
- IPC分类号: G11B5/127
摘要:
In one embodiment, a perpendicular magnetic head includes a main magnetic pole, a side shield disposed on both sides of the main magnetic pole in a track width direction, the side shield including a material having a saturation magnetic flux density of no greater than about 1.0 T, and a trailing shield disposed on a trailing side of the main magnetic pole, wherein the trailing shield and the side shield are physically separated from one another. In another embodiment, the side shield includes a first magnetic film, and the trailing shield includes a second magnetic film, wherein a magnetic permeability of the first magnetic film is lower than a magnetic permeability of the second magnetic film.