Invention Grant
- Patent Title: Electroplating of high damping material for trailing shield in a perpendicular magnetic recording writer
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Application No.: US18133374Application Date: 2023-04-11
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Publication No.: US11978488B1Publication Date: 2024-05-07
- Inventor: Xiaomin Liu , Wenjie Chen , Yue Liu , Weihao Xu , Yuhui Tang , Feiyue Li
- Applicant: Headway Technologies, Inc.
- Applicant Address: US CA Milpitas
- Assignee: Headway Technologies, Inc.
- Current Assignee: Headway Technologies, Inc.
- Current Assignee Address: US CA Milpitas
- Agency: DLA Piper LLP (US)
- Main IPC: G11B5/115
- IPC: G11B5/115 ; G11B5/11 ; G11B5/127

Abstract:
The present embodiments relate to a PMR write head with a trailing shield that comprises a FeCoNiM composition. The FeCoNiM composition can be formed via an electroplating process by adding Fe2+, Co2+, Ni2+ and a transition metal salt to an aqueous solution comprised of other additives in an electroplating cell that has an Ni or Co as the anode. The plated HD magnetic material as the trailing shield in a PMR writer can minimize a wide area track erasure (WATE). Further, a high moment high damping shield can lower bit error rate (BER) and increase aerial density capability (ADC) of the write head.
Information query
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