Invention Grant
- Patent Title: Near-field transducer (NFT) designs for improved performance of heat-assisted magnetic recording (HAMR)
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Application No.: US18364413Application Date: 2023-08-02
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Publication No.: US12190908B2Publication Date: 2025-01-07
- Inventor: Sukumar Rajauria , Erhard Schreck , Robert Smith
- 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: G11B5/00
- IPC: G11B5/00 ; G11B5/31 ; G11B13/08

Abstract:
A data storage device may include a media comprising a magnetic recording layer and a heat-assisted magnetic recording (HAMR) head for writing to the magnetic recording layer, the HAMR head comprising: a waveguide, a main pole comprising a main-pole surface facing the magnetic recording layer, a near-field transducer (NFT) situated between the main pole and the waveguide, and a transparent overcoat. The NFT comprises a main body and a micropillar. The micropillar comprises a micropillar surface facing the magnetic recording layer. A first distance between the micropillar surface and the media is less than a second distance between the main-pole surface and the media. The transparent overcoat is situated on the main-pole surface and the micropillar surface.
Public/Granted literature
- US20240404556A1 NEAR-FIELD TRANSDUCER (NFT) DESIGNS FOR IMPROVED PERFORMANCE OF HEAT-ASSISTED MAGNETIC RECORDING (HAMR) Public/Granted day:2024-12-05
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