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Proceedings Paper

Stability of phase-change optical disks produced by a pass-through type sputtering system
Author(s): Masaru Suzuki; Noriharu Morishita; Shun-ichi Tajima; Masafumi Nakao; Kazuhiro Nishimura; Miyoko Ohta
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Paper Abstract

Mass production technology of phase-change rewritable disks can be achieved by using a pass-through type in-line sputtering system. The qualities of the mass-produced PCR disk were high enough to satisfy all the specifications for this product. We optimized the composition of the recording layer (SbTeGe alloy) of the PCR disk. It was found that a Ge content of more than 20 at% in the recording layer is necessary to achieve a long archival life. The mass-produced PCR disks were very stable in the accelerated aging test. The BER stayed at nearly the same value for 2000 hrs at 90 degree(s)C, 80% RH and 4000 hrs at 80 degree(s)C, 80% RH. The life of the PCR disks was estimated to be greater than 50 years at 30 degree(s)C, 80% RH. The activation energy for the PCR disks obtained from Arrhenius plots was 1.11 eV.

Paper Details

Date Published: 12 October 1994
PDF: 11 pages
Proc. SPIE 2338, 1994 Topical Meeting on Optical Data Storage, (12 October 1994); doi: 10.1117/12.190186
Show Author Affiliations
Masaru Suzuki, Asahi Chemical Industry Co., Ltd. (Japan)
Noriharu Morishita, Asahi Chemical Industry Co., Ltd. (Japan)
Shun-ichi Tajima, Asahi Chemical Industry Co., Ltd. (Japan)
Masafumi Nakao, Asahi Chemical Industry Co., Ltd. (Japan)
Kazuhiro Nishimura, Asahi Chemical Industry Co., Ltd. (Japan)
Miyoko Ohta, Asahi Chemical Industry Co., Ltd. (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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