Heat assisted magnetic recording media design using impedance modification method

A. Ghoreyshi; S. Wang; R. H. Victora

doi:10.1109/INTMAG.2015.7157096

Heat assisted magnetic recording media design using impedance modification method

A. Ghoreyshi, S. Wang, R. H. Victora

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Heat assisted magnetic recording (HAMR) is a promising approach to increase the magnetic recording areal density beyond 1 Tb/in². In a HAMR system, an optical near field transducer (NFT) is used to locally increase the temperature of recording media so that the writing head can write information on the recording media. Various types of NFT designs have been investigated to improve the optical efficiency and the shape of the optical beam on the recording media [1]-[2]. However, the effects of the recording media structure on the performance of the NFT are not well understood yet. In this work, we study the effect of modification of the recording media structure using dielectric materials to increase the field enhancement and obtain a desirable beam profile in the recording layer.

Original language	English (US)
Title of host publication	2015 IEEE International Magnetics Conference, INTERMAG 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479973224
DOIs	https://doi.org/10.1109/INTMAG.2015.7157096
State	Published - Jul 14 2015
Event	2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China Duration: May 11 2015 → May 15 2015

Publication series

Name	2015 IEEE International Magnetics Conference, INTERMAG 2015

Other

Other	2015 IEEE International Magnetics Conference, INTERMAG 2015
Country/Territory	China
City	Beijing
Period	5/11/15 → 5/15/15

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Publisher Copyright:
© 2015 IEEE.

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10.1109/INTMAG.2015.7157096

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Ghoreyshi, A., Wang, S., & Victora, R. H. (2015). Heat assisted magnetic recording media design using impedance modification method. In 2015 IEEE International Magnetics Conference, INTERMAG 2015 Article 7157096 (2015 IEEE International Magnetics Conference, INTERMAG 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INTMAG.2015.7157096

Heat assisted magnetic recording media design using impedance modification method. / Ghoreyshi, A.; Wang, S.; Victora, R. H.
2015 IEEE International Magnetics Conference, INTERMAG 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7157096 (2015 IEEE International Magnetics Conference, INTERMAG 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ghoreyshi, A, Wang, S & Victora, RH 2015, Heat assisted magnetic recording media design using impedance modification method. in 2015 IEEE International Magnetics Conference, INTERMAG 2015., 7157096, 2015 IEEE International Magnetics Conference, INTERMAG 2015, Institute of Electrical and Electronics Engineers Inc., 2015 IEEE International Magnetics Conference, INTERMAG 2015, Beijing, China, 5/11/15. https://doi.org/10.1109/INTMAG.2015.7157096

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abstract = "Heat assisted magnetic recording (HAMR) is a promising approach to increase the magnetic recording areal density beyond 1 Tb/in2. In a HAMR system, an optical near field transducer (NFT) is used to locally increase the temperature of recording media so that the writing head can write information on the recording media. Various types of NFT designs have been investigated to improve the optical efficiency and the shape of the optical beam on the recording media [1]-[2]. However, the effects of the recording media structure on the performance of the NFT are not well understood yet. In this work, we study the effect of modification of the recording media structure using dielectric materials to increase the field enhancement and obtain a desirable beam profile in the recording layer.",

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Heat assisted magnetic recording media design using impedance modification method

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