发明授权
- 专利标题： Magnetic head for perpendicular magnetic recording with a trailing shield including a plurality of portions different in saturation flux density
- 专利标题（中）： 用于垂直磁记录的磁头，其具有包括饱和磁通密度不同的多个部分的后屏蔽
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申请号： US14981213申请日： 2015-12-28
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公开(公告)号： US09502053B1公开(公告)日： 2016-11-22
- 发明人: Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Yukinori Ikegawa , Kazumasa Yasuda
- 申请人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Yukinori Ikegawa , Kazumasa Yasuda
- 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 PLC
- 主分类号： G11B5/31
- IPC分类号： G11B5/31 ; G11B5/11 ; G11B5/127 ; G11B5/39
摘要：
A magnetic head includes a main pole, a write shield, and a gap section. The write shield includes a trailing shield. The trailing shield includes a first portion, a second portion, a third portion and a fourth portion. The second portion and the third portion are located on opposite sides of the first portion in the track width direction. Top surfaces of the first to third portions are coplanar with each other. The fourth portion lies on the top surfaces of the first to third portions. The first portion is higher in saturation flux density than the second to fourth portions.
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