Information recording medium

Abstract

Abstract PURPOSE:To enhance sensitivity or a C/N ratio and to improve weatherability, by forming an information recording medium by providing a recording layer comprising a thin film of an antimony-tin-germanium alloy having a specific compounding composition on a substrate. CONSTITUTION:A thin layer of an antimony-tin-germanium alloy Sb(1-x-y)Sn(x)Ge(y) having a composition wherein the content (x) of thin is a range of 0.2<x<0.4, the content (y) of germanium is a range of 0.05<y<0.1 and the remainder is antimony is provided on a substrate 1 as a recording layer by a sputtering method to form an information recording medium. In forming the recording layer 2 on the substrate 1, the recording layer 2 having a film thickness of about 1,000Angstrom can be adhered and formed to the substrate 1 within several min by high frequency power of several ten watt. This information recording medium has high sensitivity, a high C/N ratio and good weatherability.

Inventors

• 👤 Seiichi Takado
• 👤 清一 高堂

Bibliographic Details