发明授权
- 专利标题： Thin film magnetic head with electroplated Ni-Fe alloy thin film having small average crystal grain size range
- 专利标题（中）： 具有平均晶粒尺寸小的电镀Ni-Fe合金薄膜的薄膜磁头
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申请号： US10118008申请日： 2002-04-09
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公开(公告)号： US06490131B2公开(公告)日： 2002-12-03
- 发明人: Masaaki Sano , Yoshiaki Kita , Shun-ichi Narumi , Takashi Kawabe , Moriaki Fuyama , Hisashi Takano , Hisano Yamamoto , Kenzo Masuda
- 申请人： Masaaki Sano , Yoshiaki Kita , Shun-ichi Narumi , Takashi Kawabe , Moriaki Fuyama , Hisashi Takano , Hisano Yamamoto , Kenzo Masuda
- 优先权： JP7-16666 19950203
- 主分类号： G11B531
- IPC分类号： G11B531
摘要：
A slider having a thin film magnetic head. The thin film magnetic head has an upper magnetic core, a lower magnetic core and a coil disposed between the upper magnetic core and the lower magnetic core. The upper magnetic core and the lower magnetic core is an electroplated thin film with an average crystal grain size smaller than 500 Å, and the electroplated thin film is made of Ni—Fe alloy of which Ni is 38 to 60 wt % and Fe is 40 to 62 wt %.
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