发明授权
- 专利标题： Tunnel MR head with closed-edge laminated free layer
- 专利标题（中）： 隧道MR头与封闭层叠自由层
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申请号： US11355045申请日： 2006-02-14
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公开(公告)号： US07630177B2公开(公告)日： 2009-12-08
- 发明人: Robert Stanley Beach , David Eugene Heim , Vladimir Nikitin , David John Seagle
- 申请人： Robert Stanley Beach , David Eugene Heim , Vladimir Nikitin , David John Seagle
- 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 John L. Rogitz
- 主分类号： G11B5/39
- IPC分类号： G11B5/39
摘要：
In a tunnel magnetoresistive (TMR) device, free sublayers are separated by an intermediate spacer layer that serves to ensure a uniform circumferential magnetization in the free stack, counterbalancing orange-peel coupling by antiferromagnetic exchange coupling. Thus, a CPP MR device may have a seed stack, a pinned stack on the seed stack, and a tunnel barrier on the pinned stack. A free stack can be on the tunnel barrier, and the free stack can include structure for promoting uniform circumferential magnetization in the free stack.
公开/授权文献
- US20070188942A1 Tunnel MR head with closed-edge laminated free layer 公开/授权日：2007-08-16