RECORDING LAYER FOR OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING MEDIUM, AND SPUTTERING TARGET

摘要

A recording layer excellent in recording property, an optical information recording medium including the recording layer, and a sputtering target for producing the recording layer. The recording layer on which recording is performed through irradiation with a laser light, contains: a Pd oxide; a Ag oxide; and an oxide of a metal X of having an absolute value of the standard free energy of oxide formation per 1 mol of oxygen that is larger than an oxide of Pd and Ag, wherein a ratio of Pd atom to a total (metal X atom+Pd atom+Ag atom) is from 10 to 60 atomic %, a ratio of Ag atom to the total is from 5 to 45 atomic %, and a ratio of Pd atom and the Ag atom to the total is 75 atomic % or less.