Patent ID: 7858166

Claim:
An optical recording medium comprising: a substrate; and a multi-layered structure including an interference film; a recording film configured to reversibly change an atomic arrangement; a thin oxide film having an average thickness of 0.1 nm (inclusive) to 1.0 nm (inclusive) of an element made of a constituent element of the recording film formed in the portion in contact with the recording film; a crystallization promoting film containing oxygen formed on the thin oxide film; and a reflecting film, wherein a ratio of a density of state (DOS) in a crystalline state of the recording film to the DOS in an amorphous state of the recording film, at an energy level lower by 0.5 eV than an energy level at the top of the DOS of a valence band of the recording film, is from 1.0 (inclusive) to 2.5 (inclusive).