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Proceedings Paper

Magnetic amplifying magneto-optical system (MAMMOS) for ultrahigh-density MO recording
Author(s): Hiroyuki Awano; Satoru Ohnuki; Hiroshi Shirai; Norio Ota; Atushi Yamaguchi; Satoshi Sumi; Kenji Torazawa
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Paper Abstract

A readout method to amplify the MO signal by using a magnetic domain expansion phenomenon have been proposed. It was found that the small MO signal reproduced from 0.08 micrometers crescent shaped domain was amplified 5 times larger than that of conventional disk without readout field. Also the reproduced signal level reaches to about 70% of the saturated signal amplitude. The result corresponds to 20 Gbit/in2 areal density with conventional 680 nm laser.

Paper Details

Date Published: 30 July 1997
PDF: 4 pages
Proc. SPIE 3109, Optical Data Storage 1997 Topical Meeting, (30 July 1997); doi: 10.1117/12.280702
Show Author Affiliations
Hiroyuki Awano, Hitachi Maxell Ltd. (Japan)
Satoru Ohnuki, Hitachi Maxell Ltd. (Japan)
Hiroshi Shirai, Hitachi Maxell Ltd. (Japan)
Norio Ota, Hitachi Maxell Ltd. (Japan)
Atushi Yamaguchi, Sanyo Electric Co. Ltd. (Japan)
Satoshi Sumi, Sanyo Electric Co. Ltd. (Japan)
Kenji Torazawa, Sanyo Electric Co. Ltd. (Japan)

Published in SPIE Proceedings Vol. 3109:
Optical Data Storage 1997 Topical Meeting
Henryk Birecki; James Z. Kwiecien, Editor(s)

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