Ag ALLOY REFLECTIVE LAYER FOR OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING MEDIUM, AND SPUTTERING TARGET FOR FORMING Ag ALLOY REFLECTIVE LAYER FOR OPTICAL INFORMATION RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide an Ag alloy reflective layer for an optical information recording medium having excellent environmental resistance, an optical information recording medium, and the like.;SOLUTION: This Ag alloy reflective layer for an optical information includes 0.1 to 5 atm.% in total of at least one element selected from W, Ti, V, Mn, Zr, Cr, and Ni, 0.005 to 1 atm.% of Bi, and the residue of Ag and inevitable impurities. As a consequence, this Al alloy reflective layer has improved environmental resistance including the light resistance for the light beam of specific wavelength and resistance to moist heat under specific conditions.;COPYRIGHT: (C)2008,JPO&INPIT