Invention Grant
- Patent Title: Energy assisted magnetic recording head having improved areal density capability
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Application No.: US17644231Application Date: 2021-12-14
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Publication No.: US11557315B2Publication Date: 2023-01-17
- Inventor: Suping Song , Zhanjie Li , Terence Lam , Changqing Shi , Lijie Guan
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA San Jose
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Patterson & Sheridan, LLP
- Agent Steven H. VerSteeg
- Main IPC: G11B5/235
- IPC: G11B5/235 ; G11B5/23 ; G11B5/31 ; G11B5/127 ; G11B5/39 ; G11B5/00 ; G11B5/48 ; G11B5/245

Abstract:
The present disclosure generally relates to a magnetic media drive employing a magnetic recording head. The magnetic recording head comprises a main pole, an EAMR stack disposed on the main pole, and a trailing shield disposed on the EAMR stack. The EAMR stack comprises a seed layer disposed on the main pole, a spin torque layer disposed on the seed layer, and a spacer layer disposed on the spin torque layer. At least one surface of the spacer layer in contact with the spin torque layer has a smaller or reduced area than the spin torque layer. The at least one surface of the spacer layer in contact with the spin torque layer is recessed from a media facing surface and has a smaller cross-track width than the spin torque layer and a smaller width in the stripe height direction than the spin torque layer.
Public/Granted literature
- US20220108715A1 Energy Assisted Magnetic Recording Head Having Improved Areal Density Capability Public/Granted day:2022-04-07
Information query
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