Invention Grant
- Patent Title: Superior performance head design with minimized ATE and WATE
- Patent Title (中): 卓越的性能头设计,最小化ATE和WATE
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Application No.: US13620760Application Date: 2012-09-15
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Publication No.: US08498079B1Publication Date: 2013-07-30
- Inventor: Suping Song , Yuhui Tang , Tai Min , Lijie Guan
- Applicant: Suping Song , Yuhui Tang , Tai Min , Lijie Guan
- 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 PMR writer is disclosed with an all wrap around design wherein the leading shield, side shields, and composite trailing shield are comprised of an anisotropic (−Ku) magnetic layer, and where the leading shield and side shields adjoin a gap layer. The composite shield has a first layer made of an isotropic magnetic material adjoining the write gap, and the anisotropic (−Ku) layer adjoins the first trailing shield layer on a side opposite the write gap. The main pole may have a tapered leading side and a tapered trailing side with the anisotropic (−Ku) leading shield and trailing shield layers extending a greater distance from the ABS than the ends of the tapered main pole sides. Adjacent track erasure is minimized while on-track write field and field gradient are improved.
Information query
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