Heat-assisted magnetic recording (HAMR) head with tapered main pole and heat sink material adjacent to the pole
DE602020056644T2Active Publication Date: 2025-08-13WESTERN DIGITAL TECHNOLOGIES INC
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Patent Information
- Application Number
- DE602020056644
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-07-23
- Filing Date
- 2020-03-27
- Publication Date
- 2025-08-13
- Estimated Expiration
- 2040-03-27
AI Technical Summary
Technical Problem
Conventional HAMR heads face issues with wide main poles that increase magnetic field rise time, reducing data rate, and are prone to oxidation due to temperature rise and wear.
Method used
The main pole is designed with two layers, tapering towards the NFT, and accompanied by heat sink material on sloped sides to maintain magnetic field strength and reduce temperature-related oxidation.
Benefits of technology
This design reduces magnetic field rise time and minimizes oxidation, enhancing data rate and durability of the HAMR head.
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