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Proceedings Paper

Recording characteristics of a magneto-optical super-resolution disk
Author(s): Junji Hirokane; Yoshiteru Murakami; H. Katayama; Akira Takahashi; Kenji Ohta; Hideyoshi Yamaoka
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Paper Abstract

To reduce recording magnetic field of a magneto-optical super-resolution disk which uses an in-plane magnetization readout layer, we developed a new disk structure. By preparing a DyFeCo intermediate layer between the readout layer and the recording layer, the recording magnetic field was greatly reduced and then both super-resolution readout and mark-edge recording by a magnetic field modulation method were achieved. By using the new triple-layered disk for super-resolution readout, a carrier to noise ratio of 45 dB at a 0.4 micrometers mark length was obtained and the recording magnetic field became 15 kA/m.

Paper Details

Date Published: 12 October 1994
PDF: 4 pages
Proc. SPIE 2338, 1994 Topical Meeting on Optical Data Storage, (12 October 1994); doi: 10.1117/12.190198
Show Author Affiliations
Junji Hirokane, Sharp Corp. (Japan)
Yoshiteru Murakami, Sharp Corp. (Japan)
H. Katayama, Sharp Corp. (Japan)
Akira Takahashi, Hamamatsu Photonics KK (Japan)
Kenji Ohta, Sharp Corp. (Japan)
Hideyoshi Yamaoka, Sharp Corp. (Japan)

Published in SPIE Proceedings Vol. 2338:
1994 Topical Meeting on Optical Data Storage
David K. Campbell; Martin Chen; Koichi Ogawa, Editor(s)

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