Invention Grant
- Patent Title: Sensor structure with multilayer top shield
- Patent Title (中): 传感器结构与多层顶盖
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Application No.: US14940360Application Date: 2015-11-13
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Publication No.: US09454979B1Publication Date: 2016-09-27
- Inventor: Zhengqi Lu , Daniel Hassett , Paula McElhinney , Jiansheng Xu
- Applicant: Seagate Technology LLC
- Applicant Address: US CA Cupertino
- Assignee: SEAGATE TECHNOLOGY LLC
- Current Assignee: SEAGATE TECHNOLOGY LLC
- Current Assignee Address: US CA Cupertino
- Agency: HolzerIPLaw, PC
- Main IPC: G11B5/39
- IPC: G11B5/39 ; G11B5/33

Abstract:
A reader sensor comprising a sensor stack and a composite top shield. The composite top shield includes a bulk shield portion and a SAF portion, the SAF portion comprising a top magnetic layered structure and a bottom magnetic layered structure with a non-magnetic layer therebetween. Each of the magnetic layered structures has at least one soft magnetic material layer bounded by layers comprising magnetic material having a magnetic moment of at least 1.4 T.
Information query
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