Invention Grant
- Patent Title: Magnetic recording devices using virtual side shields for improved areal density capability
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Application No.: US17039840Application Date: 2020-09-30
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Publication No.: US11749299B2Publication Date: 2023-09-05
- Inventor: Suping Song , Zhanjie Li , Terence Lam , 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
- The original application number of the division: US16564704 2019.09.09
- Main IPC: G11B5/235
- IPC: G11B5/235 ; G11B5/31 ; G11B5/127 ; G11B5/012 ; G11B5/02 ; G11B5/11 ; G11B5/00

Abstract:
Embodiments of the present disclosure generally relate to a magnetic media drive employing a magnetic recording device. The magnetic recording device comprises a trailing gap disposed adjacent to a first surface of a main pole, a first side gap disposed adjacent to a second surface of the main pole, a second side gap disposed adjacent to a third surface of the main pole, and a leading gap disposed adjacent to a fourth surface of the main pole. A side shield surrounds the main pole and comprises a heavy metal first layer and a magnetic second layer. The first layer surrounds the first, second, and third surfaces of the main pole, or the second, third, and fourth surfaces of the main pole. The second layer surrounds the second and third surfaces of the main pole, and may further surround the fourth surface of the main pole.
Public/Granted literature
- US20210074322A1 Magnetic Recording Devices Using Virtual Side Shields for Improved Areal Density Capability Public/Granted day:2021-03-11
Information query
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