Patent ID: 8470514
Filing Date: 2013-06-25
Classification: G11B

Abstract:
1. An information recording medium comprising an information layer on a substrate, wherein the information layer has a recording layer, on and from which information can be recorded and reproduced by irradiating the recording layer with a laser beam, wherein the recording layer comprises Sb, O and M, wherein M is a combination of Ge and at least one element selected from a group consisting of Zn, Ni, Te, C and Cu, wherein a content of O atoms is 35 atom %, a content of Ge is 10 atom %, a content of the at least one element selected from the group consisting of Zn, Ni, Te, and Cu is 10 atom %, and a content of Sb atoms is 45 atom %, based on the total number of the Sb atoms, the O atoms, and the M atoms contained in the recording layer being 100 atom %, wherein the recording layer comprises the Sb atoms, the O atoms and the M atoms in an amount of 80 atom % or more in total, and wherein the recording layer does not contain Au, Pt and Pd.