Hitachi Maxell, Limited

Yutaka Watanabe

Makoto Miyamoto

Naoki Kitagaki

Yoshihiro Ikari

Makoto Iimura

Akira Kashiwakura

Mayumi Kurokawa

Sonoko Onodera

A phase-change optical recording medium capable of performing recording and reproduction at a high speed is provided, in which a reproduced signal output is not only sufficiently large but the phase-change optical recording medium also has excellent repeated rewriting performance. An interface layer, which is composed of a Ge&#x2014;Si&#x2014;N-based material, is formed on at least a surface of one side of a recording layerof the phase-change optical recording medium. Accordingly, even when a phase-change material having a high melting point, for example, a Bi&#x2014;Ge&#x2014;Te-based phase-change material is used for the recording layer, it is possible to provide the phase-change optical recording medium in which the reproduced signal output is sufficiently large and the repeated rewriting performance is excellent.

Phase-change optical recording medium

Growing community of inventors

Mitsukaido, Japan

Yutaka Watanabe