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Proceedings Paper

Near field optical transducer design with FePt recording media for multiple Tb/in2 density heat assisted magnetic recording
Author(s): B. X. Xu; Y. T. Toh; C. W. Chia; J. F. Hu; G. G. Vienne; C. W. An; Y. Yosia; T. C. Chong
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Paper Abstract

In heat assisted magnetic recording, near field optical transducer is a key component for its success. Due to the near field properties, the transducer design has to be done combining with media. FePt is a potential recording material for heat assisted recording. In this paper, the measured optical constant of FePt thin film was introduced, and the design and simulation of c-aperture transducer with FePt media for multiple Tb/in2 heat assisted magnetic recording application were performed. The light spot sizes of around 15nm with high efficiency were obtained. Optical transducer is used to heat the media locally. Its final target is to generate smaller thermal profile to meet the requirement of recording density. Therefore, using obtained beam spot as heat source, thermal simulations were carried out with media material's thermal parameters. The simulation results show that recording density of 3Tb/in2 is possible.

Paper Details

Date Published: 3 June 2010
PDF: 6 pages
Proc. SPIE 7730, Optical Data Storage 2010, 77300N (3 June 2010); doi: 10.1117/12.859097
Show Author Affiliations
B. X. Xu, A*STAR - Data Storage Institute (Singapore)
Y. T. Toh, A*STAR - Data Storage Institute (Singapore)
C. W. Chia, A*STAR - Data Storage Institute (Singapore)
J. F. Hu, A*STAR - Data Storage Institute (Singapore)
G. G. Vienne, A*STAR - Data Storage Institute (Singapore)
C. W. An, A*STAR - Data Storage Institute (Singapore)
Y. Yosia, A*STAR - Data Storage Institute (Singapore)
T. C. Chong, A*STAR - Data Storage Institute (Singapore)

Published in SPIE Proceedings Vol. 7730:
Optical Data Storage 2010
Susanna Orlic; Ryuichi Katayama, Editor(s)

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