Design of plasmonic near-field transducers in heat-assisted magnetic recording: 1D Fourier approach

C. H. Gan; R. Fernandez-Garcia; M. J. Hardy; A. Neira; S. Bance; M. A. Gubbins

doi:10.1117/12.2236844

17 September 2016 Design of plasmonic near-field transducers in heat-assisted magnetic recording: 1D Fourier approach

C. H. Gan, R. Fernandez-Garcia, M. J. Hardy, A. Neira, S. Bance, M. A. Gubbins

Proceedings Volume 9921, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIV; 99211X (2016) https://doi.org/10.1117/12.2236844
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

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.

Conference Presentation

Citation Download Citation

C. H. Gan, R. Fernandez-Garcia, M. J. Hardy, A. Neira, S. Bance, and M. A. Gubbins "Design of plasmonic near-field transducers in heat-assisted magnetic recording: 1D Fourier approach", Proc. SPIE 9921, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIV, 99211X (17 September 2016); https://doi.org/10.1117/12.2236844

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