发明申请
- 专利标题： CPP Structure with enhanced GMR ratio
- 专利标题（中）： CPP结构具有增强的GMR比
-
申请号： US13065966申请日： 2011-04-04
-
公开(公告)号： US20110179635A1公开(公告)日： 2011-07-28
- 发明人: Kunliang Zhang , Min Li , Yu-Hsia Chen , Chyu-Jiuh Torng
- 申请人： Kunliang Zhang , Min Li , Yu-Hsia Chen , Chyu-Jiuh Torng
- 专利权人： Headway Technologies, Inc.
- 当前专利权人： Headway Technologies, Inc.
- 主分类号： G11B7/22
- IPC分类号： G11B7/22
摘要：
A CPP-GMR spin valve having a CoFe/NiFe composite free layer is disclosed in which Fe content of the CoFe layer ranges from 20 to 70 atomic % and Ni content in the NiFe layer varies from 85 to 100 atomic % to maintain low Hc and λs values. A higher than normal Fe content in the CoFe layer improves the MR ratio by ≧16% compared with conventional CoFe/NiFe free layers in which the Fe content in CoFe is typically