发明授权
- 专利标题： Magnetic detection head and method for manufacturing the same
- 专利标题（中）： 磁性检测头及其制造方法
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申请号： US11436270申请日： 2006-05-17
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公开(公告)号： US07738218B2公开(公告)日： 2010-06-15
- 发明人: Yosuke Ide , Masamichi Saito , Masahiko Ishizone , Naoya Hasegawa
- 申请人： Yosuke Ide , Masamichi Saito , Masahiko Ishizone , Naoya Hasegawa
- 申请人地址： JP Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Brinks Hofer Gilson & Lione
- 优先权： JP2005-158928 20050531
- 主分类号： G11B5/127
- IPC分类号： G11B5/127
摘要：
A magnetic detection element capable of maintaining the ΔRA at a high level and reducing the magnetostriction by improving a material for a free magnetic layer, as well as a method for manufacturing the same, is provided. The free magnetic layer includes a laminate composed of a CoMnX alloy layer formed from a metal compound represented by a compositional formula CoaMnbXc (where X represents at least one of Ge, Ga, In, Si, Pb, Zn, and Sb and a+b+c=100 atomic percent) and a CoMnZ alloy layer formed from a metal compound represented by a compositional formula CodMneZf (where Z represents at least one of Sn and Al and d+e+f=100 atomic percent). In this manner, the magnetostriction of the free magnetic layer can be reduced.