发明授权
- 专利标题： Perpendicular magnetic recording write head with improved laminated main pole
- 专利标题（中）： 垂直磁记录头与改进的层叠主极
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申请号： US12759508申请日： 2010-04-13
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公开(公告)号： US08139321B2公开(公告)日： 2012-03-20
- 发明人: Alexander M. Zeltser , Stefan Maat
- 申请人： Alexander M. Zeltser , Stefan Maat
- 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
- 代理商 Thomas R. Berthold
- 主分类号： G11B5/31
- IPC分类号： G11B5/31
摘要：
A perpendicular magnetic recording write head has an improved antiferromagnetically-coupled laminated main pole (MP) formed on a substrate. The MP has two ferromagnetic multilayers, each comprising at least one FeCo/NiFe/FeCo ferromagnetic trilayer, antiferromagnetically coupled across an antiferromagnetically coupling (AFC) film consisting essentially of ruthenium (Ru). The MP has a NiFe layer directly above the AFC film, on the side of the AFC film opposite the side facing the substrate, and in contact with the Ru AFC film and the lower FeCo layer of the upper multilayer. There is no NiFe layer directly below the Ru AFC film so the side of the AFC film facing the substrate is in direct contact with the upper FeCo layer of the lower multilayer.
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