A high transmittance optical recording material with long-term reliability for super-multilayer discs

As a means of increasing data capacity, the multilayer optical disc is a promising approach. Because the recording layers in multilayer optical discs must have a high transmittance, they are commonly made of transparent oxide films. Moreover, the recording layer must have sufficient long-term reliab...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 54; no. 9S; pp. 9 - 13
Main Authors Shimomai, Kenichi, Asano, Sho, Oshita, Junji, Matsuda, Isao, Kojo, Shinichi, Murai, Wakaaki, Hattori, Masashi, Shimizu, Atsuo, Fujii, Toru
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 01.09.2015
Subjects
Disks
Multilayers
Optical discs
Oxide coatings
Oxides
Recording
Transmittance
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Summary:As a means of increasing data capacity, the multilayer optical disc is a promising approach. Because the recording layers in multilayer optical discs must have a high transmittance, they are commonly made of transparent oxide films. Moreover, the recording layer must have sufficient long-term reliability for data archival. In this work, a recording material with high transmittance and long-term reliability for use in super-multilayer discs was investigated. This paper clarifies the recording mechanism of GeBi oxide material and proposes a suitable material design that satisfies the abovementioned characteristics. Furthermore, experimental results of recording on super-multilayer discs based on GeBi oxide recording material are presented.
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ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.54.09MB02