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Proceedings Paper

Design of plasmonic near-field transducers in heat-assisted magnetic recording: 1D Fourier approach
Author(s): C. H. Gan; R. Fernandez-Garcia; M. J. Hardy; A. Neira; S. Bance; M. A. Gubbins
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Paper Abstract

Heat-assisted magnetic recording (HAMR) is a potential enabling technology for ultrahigh density data storage systems. In HAMR, a near-field transducer (NFT) delivers a subdiffraction heat spot to record bits of data on a high-anisotropy magnetic media. We developed an intuitive 1D Fourier model that expedites the analysis and design of the NFT. Among other strengths, the simple model predicts rather surprisingly and in agreement with 3D simulations, that for metallic nanoresonators the longitudinal component of the electric field dominates the heat transfer to the media. The proposed Fourier model serves well as a platform to study electromagnetic behavior such as field confinement and heat spot generation of 3D NFT designs.

Paper Details

Date Published: 17 September 2016
PDF: 7 pages
Proc. SPIE 9921, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIV, 99211X (17 September 2016); doi: 10.1117/12.2236844
Show Author Affiliations
C. H. Gan, Seagate Technology LLC (United Kingdom)
R. Fernandez-Garcia, Seagate Technology LLC (United Kingdom)
M. J. Hardy, Seagate Technology LLC (United Kingdom)
A. Neira, Seagate Technology LLC (United Kingdom)
S. Bance, Seagate Technology LLC (United Kingdom)
M. A. Gubbins, Seagate Technology LLC (United Kingdom)


Published in SPIE Proceedings Vol. 9921:
Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIV
Satoshi Kawata; Din Ping Tsai, Editor(s)

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