Invention Grant
- Patent Title: Recording head with a multilayer spin torque element having positive and negative beta materials
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Application No.: US18355114Application Date: 2023-07-19
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Publication No.: US12094498B1Publication Date: 2024-09-17
- Inventor: Alexander Goncharov , James Mac Freitag , Susumu Okamura , Muhammad Asif Bashir
- 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
- Main IPC: G11B5/31
- IPC: G11B5/31 ; G11B5/00

Abstract:
The present disclosure generally relates to a spin torque element disposed between a main pole and a shield in a magnetic recording head. The shield could be a trailing shield, a side shield, or a leading shield. The spin torque element includes a dual layer spin transfer structure that is spaced from magnetic layers on either side using spacer layers. One magnetic layer that faces a positive polarizer has a positive polarization while another magnetic layer facing the negative polarizer has a negative polarization. As such, torque in the spacer layers is maximized when the direction of the magnetization in the STL is opposite to the gap field.
Information query
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