发明授权
- 专利标题： Magnetic head for perpendicular magnetic recording with encasing layer
- 专利标题（中）： 磁头，用于垂直磁记录与封装层
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申请号： US11129377申请日： 2005-05-16
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公开(公告)号： US07663839B2公开(公告)日： 2010-02-16
- 发明人: Yoshitaka Sasaki , Hiroyuki Itoh , Shigeki Tanemura , Takehiro Horinaka , Kazuo Ishizaki
- 申请人： Yoshitaka Sasaki , Hiroyuki Itoh , Shigeki Tanemura , Takehiro Horinaka , Kazuo Ishizaki
- 申请人地址： US CA Milpitas
- 专利权人： Headway Technologies, Inc.
- 当前专利权人： Headway Technologies, Inc.
- 当前专利权人地址： US CA Milpitas
- 代理机构： Oliff & Berridge, PLC
- 主分类号： G11B5/31
- IPC分类号： G11B5/31 ; G11B5/39
摘要：
A pole layer has: a first portion having an end face located in a medium facing surface; and a second portion that is located farther from the medium facing surface than the first portion and has a thickness greater than that of the first portion. A surface of the first portion farther from a substrate is located closer to the substrate than a surface of the second portion farther from the substrate. The second portion has a front end face that couples the surface of the first portion farther from the substrate to the surface of the second portion farther from the substrate. A shield layer has a portion located between the front end face and the medium facing surface in a region closer to the substrate than the surface of the second portion farther from the substrate.