Invention Grant
- Patent Title: CPP structure with enhanced GMR ratio
- Patent Title (中): CPP结构具有增强的GMR比
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Application No.: US13065975Application Date: 2011-04-04
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Publication No.: US08289661B2Publication Date: 2012-10-16
- Inventor: Kunliang Zhang , Min Li , Yu-Hsia Chen , Chyu-Jiuh Torng
- Applicant: Kunliang Zhang , Min Li , Yu-Hsia Chen , Chyu-Jiuh Torng
- Applicant Address: US CA Milpitas
- Assignee: Headway Technologies, Inc.
- Current Assignee: Headway Technologies, Inc.
- Current Assignee Address: US CA Milpitas
- Agency: Saile Ackerman LLC
- Agent Stephen B. Ackerman
- Main IPC: G11B5/127
- IPC: G11B5/127
Abstract:
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
Public/Granted literature
- US20110183158A1 CPP structure with enhanced GMR ratio Public/Granted day:2011-07-28
Information query
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