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A Numerical Investigation of the Nanoscale Heat Transfer in Heat Assisted Magnetic Recording

[+] Author Affiliations
Yueqiang Hu, Yonggang Meng

Tsinghua University, Beijing, China

Haoyu Wu, David Bogy

University of California, Berkeley, CA

Paper No. ISPS2017-5411, pp. V001T01A002; 4 pages
  • ASME 2017 Conference on Information Storage and Processing Systems collocated with the ASME 2017 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems
  • ASME 2017 Conference on Information Storage and Processing Systems
  • San Francisco, California, USA, August 29–30, 2017
  • Conference Sponsors: Information Storage and Processing Systems Division
  • ISBN: 978-0-7918-5810-3
  • Copyright © 2017 by ASME


The heat management problem in the heat assisted magnetic recording (HAMR) has been a long-term issue. In this paper, we investigated the temperature increase of a “lollipop” type near field transducer (NFT) in HAMR. We included the electromagnetic (EM) field analysis in the modeling and considered the back-heating from the media to the head with various heat transfer mechanisms. The results showed that the overcoat layer of the NFT plays an important role for protecting the NFT from high temperature. Degradation of the overcoat layer may result in the early failure of the NFT.

Copyright © 2017 by ASME



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