- 专利标题: Magnetic read sensors having stabilized upper readers, and related methods
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申请号: US17500572申请日: 2021-10-13
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公开(公告)号: US11514935B1公开(公告)日: 2022-11-29
- 发明人: Xiaoyong Liu , Ji Li , Goncalo Marcos Baião De Albuquerque , Daniele Mauri , Yukimasa Okada
- 申请人: Western Digital Technologies, Inc.
- 申请人地址: US CA San Jose
- 专利权人: Western Digital Technologies, Inc.
- 当前专利权人: Western Digital Technologies, Inc.
- 当前专利权人地址: US CA San Jose
- 代理机构: Patterson & Sheridan, LLP
- 代理商 Steven H. VerSteeg
- 优先权: CN202111054466.6 20210909
- 主分类号: G11B5/39
- IPC分类号: G11B5/39 ; G11B5/11 ; G11B5/21
摘要:
Aspects of the present disclosure generally relate to magnetic recording heads of magnetic recording devices. A read head includes a first reader, an insulating separation layer, and a second reader disposed above the insulating separation layer. The second reader includes a magnetic seed layer and a cap layer. The second reader includes a first upper free layer disposed between the magnetic seed layer and the cap layer, and a second upper free layer disposed between the first upper free layer and the cap layer. The second reader includes a barrier layer. In one implementation the second reader includes an antiferromagnetic (AFM) layer disposed between the magnetic seed layer and the insulating separation layer to pin the magnetic seed layer.
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