Ag ALLOY REFLECTION FILM FOR OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING MEDIUM AND Ag ALLOY SPUTTERING TARGET FOR FORMING Ag ALLOY REFLECTION FILM FOR OPTICAL INFORMATION RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide an Ag alloy reflection film for an optical information recording medium capable of easily performing laser marking.;SOLUTION: (1) The Ag alloy reflection film for the optical information recording medium consisting essentially of Ag and containing 1 to 10 at.% at least one element of Nd, Gd, Y, Sm, La and Ce and 2 to 10 at.% at least one element of Li, Mg, Al, Zn, Cu, Pt, Au, Pd, Ru and Rh is provided. (2) The Ag alloy reflection film mentioned in (1) and containing 0.01 to 3 at.% at least one element of Bi and Sb is provided. (3) The Ag alloy reflection film mentioned in (1) or (2) and containing 2 to 10 at.% at least one element of In, Sn and Pb is provided. (4) The optical information recording medium having the Ag alloy reflection film is provided. (5) The sputtering target made of an Ag alloy and having a composition similar to the composition of the Ag alloy reflection film in above (1) is provided.;COPYRIGHT: (C)2007,JPO&INPIT