Recording member

Details Recording member Recording member

G - Physics

11

B

352/82.1

G11B 7/24 (2006.01) G03C 1/705 (2006.01) G11B 7/243 (2006.01)

Patent

CA 1138109

RECORDING MEMBER Abstract of the Disclosure The invention relates to a recording member having a predetermined substrate, and a thin film which is formed on the substrate in which recesses or pits can be formed for recording information when irradiated with a working beam, e.g. a laser beam. The thin film is formed of an inorganic material which contains at least arsenic, selenium and tellu- rium. The distribution of either of the Se and the Te decrea- ses from a part near the surface of the thin film towards a central part thereof, while the distribution of the As increa- ses from a part near the surface towards the central part. This recording member can provide a high signal-to-noise ratio and a long lifetime because the oxidation of arsenic limited and therefore the structure remains stable even over long periods of time.

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