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Progress of the Phase-change Optical Disk Memory

Published online by Cambridge University Press:  21 March 2011

Takeo Ohta,
Noboru Yamada,
Hiroaki Yamamoto,
Tsuneo Mitsuyu,
Takashi Kozaki,
Jianrong Qiu and
Kazuyuki Hirao
Takeo Ohta
Affiliation:
Optical disk systems development center Matsushita Electric Industrial Co., Ltd. Kadoma, Kadoma City, 571-8501 Osaka, Japan
Noboru Yamada
Affiliation:
Optical disk systems development center Matsushita Electric Industrial Co., Ltd. Kadoma, Kadoma City, 571-8501 Osaka, Japan
Hiroaki Yamamoto
Affiliation:
Optical disk systems development center Matsushita Electric Industrial Co., Ltd. Kadoma, Kadoma City, 571-8501 Osaka, Japan
Tsuneo Mitsuyu
Affiliation:
The Nakao Laboratory Matsushita Electric Industrial Co., Ltd Yagumo Naka-machi, Moriguchi City, 570-8501 Osaka, Japan
Takashi Kozaki
Affiliation:
Matsushita Techno-Research Matsushita Electric Industrial Co., Ltd Yagumo Naka-machi, Moriguchi City, 570-8501 Osaka, Japan
Jianrong Qiu
Affiliation:
Photon Craft Project, ICORP, JST Keihanna-plaza, Hikaridai, Seika-cho, 619-0237 Kyoto, Japan
Kazuyuki Hirao
Affiliation:
Photon Craft Project, ICORP, JST Keihanna-plaza, Hikaridai, Seika-cho, 619-0237 Kyoto, Japan
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Abstract

Optical memory has two recording modes: the photon-mode as a silver halide photograph and the heat-mode as a laser optical disk. Though laser heat-mode recording has the advantage of environmental stability, it has limitations due to thermal diffusion phenomena, which will be discussed in this paper.

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