Invention Application
- Patent Title: AREAL DENSITY CAPABILITY IMPROVEMENT WITH A MAIN POLE SKIN
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Application No.: US17868586Application Date: 2022-07-19
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Publication No.: US20220358957A1Publication Date: 2022-11-10
- Inventor: Suping SONG , Zhanjie LI , Kuok San HO , Quang LE , Alexander M. ZELTSER
- 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
- Main IPC: G11B5/127
- IPC: G11B5/127 ; G11B5/31 ; G11B5/23

Abstract:
The present disclosure generally relates to data storage devices, and more specifically, to a magnetic media drive employing a magnetic recording head. The head includes a main pole at a media facing surface (MFS), a trailing shield at the MFS, and a heavy metal layer disposed between the main pole and the trailing shield at the MFS. Spin-orbit torque (SOT) is generated from the heavy metal layer and transferred to a surface of the main pole as a current passes through the heavy metal layer in a cross-track direction. The SOT executes a torque on the surface magnetization of the main pole, which reduces the magnetic flux shunting from the main pole to the trailing shield. With the reduced magnetic flux shunting from the main pole to the trailing shield, write-ability is improved.
Public/Granted literature
- US11682418B2 Areal density capability improvement with a main pole skin Public/Granted day:2023-06-20
Information query
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