Abstract: A semi-reflective film and reflective film for an optical recording medium, which is made of a silver alloy having a composition consisting of 0.001 to 0.1% by mass of Ca, 0.05 to 1% by mass of Mg, and a remainder containing Ag and inevitable impurities, and a target which is made of a silver alloy having a composition consisting of 0.001 to 0.1% by mass of Ca, 0.05 to 1% by mass of Mg, and a remainder containing Ag and inevitable impurities; and a semi-reflective film for an optical recording medium, which is made of a silver alloy having a composition consisting of 0.05 to 1% by mass of Mg, 0.05 to 1% by mass of one or more of Eu, Pr, Ce and Sm, and a remainder containing Ag and inevitable impurities, and an Ag alloy sputtering target for forming a semi-reflective film for an optical recording medium, which is made of a silver alloy having a composition consisting of 0.05 to 1% by mass of Mg, 0.05 to 1% by mass of one or more of Eu, Pr, Ce and Sm, and a remainder containing Ag and inevitable impurities.

Abstract: An Al alloy reflective electrode film in the anode layer of a top emission type organic EL element is provided. The Al alloy repeller has high reflectivity, high electric conductivity, a low average surface roughness, and low contact resistance. The Al alloy reflective electrode film is made of an Al alloy consisting of 0.5 to 15% by mass of Mg, a total amount of 0.5 to 10% by mass of one or more elements selected from the group consisting of La, Ce, Pr, Nd, and Eu, and the remainder composed of Al and inevitable impurities, or consisting of 0.5 to 15% by mass of Mg, 0.5 to 10% by mass of Ce, a total amount of 2 to 9% by mass of one or two elements selected from the group consisting of Ni and Co, and the remainder composed of Al and inevitable impurities. Because of these configuration, the reflective electrode film having high reflectivity, high electric conductivity, a low average surface roughness, and low contact resistance with the hole injection film, such as ITO and AZO, is formed.

Abstract: A semi-reflective film and reflective film for an optical recording medium, which is made of a silver alloy having a composition consisting of 0.001 to 0.1% by mass of Ca, 0.05 to 1% by mass of Mg, and a remainder containing Ag and inevitable impurities, and a target which is made of a silver alloy having a composition consisting of 0.001 to 0.1% by mass of Ca, 0.05 to 1% by mass of Mg, and a remainder containing Ag and inevitable impurities; and a semi-reflective film for an optical recording medium, which is made of a silver alloy having a composition consisting of 0.05 to 1% by mass of Mg, 0.05 to 1% by mass of one or more of Eu, Pr, Ce and Sm, and a remainder containing Ag and inevitable impurities, and an Ag alloy sputtering target for forming a semi-reflective film for an optical recording medium, which is made of a silver alloy having a composition consisting of 0.05 to 1% by mass of Mg, 0.05 to 1% by mass of one or more of Eu, Pr, Ce and Sm, and a remainder containing Ag and inevitable impurities.