Optical information recording member comprising Au, TeO2 and Te

Abstract

Abstract Disclosed is an optical information recording member which permits recording of optical information at a high speed and high density by means of energy of light or heat, as well as a high speed reproduction of the recorded information. The optical information recording member has a thin film formed on a substrate which thin film is made of TeOx constituted by a mixture of Te and TeO2 with a small amount of Au being added such that the contents of Te, O and Au in the thin film falls within a predetermined region limited in terms of atomic percent. The optical information recording member of the invention having the thin film of Te-O-Au system permits the information to be recorded in quite a short time thus allowing quite high speed of recording and reproduction as compared with the conventional recording film of TeOx system. The optical information recording member of the invention also brings about a higher recording sensitivity and a higher C/N ratio. Further, the optical information recording member may have a thermal diffusion layer of a metal having a higher heat conductivity than the thin film, formed on at least one side of the recording thin film, thereby making uniform and stabilizing the recording bits. In consequence, undesirable distortion of the recording bits is prevented even when an excessively large recording power is irradiated, thus affording a wider adaptability of the optical information recording member.

Inventors

• 👤 Eiji Ohno
• 👤 Kunio Kimura
• 👤 Noboru Yamada
• 👤 Nobuo Akahira

Bibliographic Details