发明授权
US07092218B2 Magnetic head comprising magnetic domain control layer formed on ABS-side of magnetic flux guide for GMR element and method of manufacturing the magnetic head
失效
磁头包括形成在用于GMR元件的磁通引导件的ABS侧上的磁畴控制层和制造磁头的方法
- 专利标题： Magnetic head comprising magnetic domain control layer formed on ABS-side of magnetic flux guide for GMR element and method of manufacturing the magnetic head
- 专利标题（中）： 磁头包括形成在用于GMR元件的磁通引导件的ABS侧上的磁畴控制层和制造磁头的方法
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申请号： US10464708申请日： 2003-06-17
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公开(公告)号： US07092218B2公开(公告)日： 2006-08-15
- 发明人: Naoya Hasegawa , Eiji Umetsu
- 申请人： Naoya Hasegawa , Eiji Umetsu
- 申请人地址： JP Tokyo
- 专利权人： Alps Electric Co., Ltd.
- 当前专利权人： Alps Electric Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Brinks Hofer Gilson & Lione
- 优先权： JP2002-177867 20020619
- 主分类号： G11B5/39
- IPC分类号： G11B5/39
摘要：
The present invention provides a magnetic head including a magnetic flux guide layer for effectively inducing an external magnetic field in a free magnetic layer. A magnetic domain control layer is formed in a space below the magnetic flux guide layer and in front of a multilayer film near a surface facing a recording medium. Therefore, the shape of the magnetic flux guide layer can be made substantially flat to improve flux transmission efficiency. Also, the magnetization of the magnetic flux guide layer is controlled by laminating the magnetic flux guide layer on the magnetic domain control layer. Therefore, the magnetic domain control layer can be formed in a substantially flat thin film to stabilize a bias magnetic field to be supplied to the magnetic flux guide layer. Furthermore, the gap length of the magnetic head can be kept short.
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