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Proceedings Paper

New layer structure of phase-change optical disk free from the initialization process
Author(s): Shuichiro Ogawa; Keigo Takeguchi; Isao Morimoto
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Paper Abstract

In general, phase change media have to be initialized prior to recording. Initialization for phase change optical disks involves crystallization of as-deposited amorphous recording films. An initialization-free technology will lead to a low production cost, which is very important for commercialization phase change optical disks. A crystallization assisted layer (CA layer) was deposited just before the sputtering of a recording layer GeSbTe. The CA layer is assist to crystallize GeSbTe film during sputtering. We have confirmed by X-ray diffraction method that the recording layer was crystallized just after sputtering. Our proposed disk with CA layer show the similar performance to the 2.6 GBytes digital video disk- random access memory (DVD-RAM) disk.

Paper Details

Date Published: 23 October 1998
PDF: 8 pages
Proc. SPIE 3401, Optical Data Storage '98, (23 October 1998); doi: 10.1117/12.327942
Show Author Affiliations
Shuichiro Ogawa, Asahi Chemical Industry Co., Ltd. (Japan)
Keigo Takeguchi, Asahi Chemical Industry Co., Ltd. (Japan)
Isao Morimoto, Asahi Chemical Industry Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 3401:
Optical Data Storage '98

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