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SILVER ALLOY REFLECTION FILM FOR OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING MEDIUM AND SPUTTERING TARGET FOR SILVER ALLOY REFLECTION FILM FOR OPTICAL INFORMATION RECORDING MEDIUM FORMATION
SILVER ALLOY REFLECTION FILM FOR OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING MEDIUM AND SPUTTERING TARGET FOR SILVER ALLOY REFLECTION FILM FOR OPTICAL INFORMATION RECORDING MEDIUM FORMATION
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机译:用于光学信息记录介质的银合金反射膜,用于光学信息记录介质形成的银合金反射膜和溅射靶
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摘要
PROBLEM TO BE SOLVED: To provide an Ag alloy reflection film for an optical information recording medium, which, even when a metallic reflection film and a resin layer are in direct contact with each other, can maintain excellent environmental resistance such as excellent moist heat resistance and light resistance for a long period of time, to provide an optical information recording medium comprising the reflection film, and to provide a sputtering target for the reflection film formation.;SOLUTION: In the Ag alloy reflection film used in an optical information recording medium, a specific element selected from Pr, Ho and Yb is contained to suppress a deterioration mode in which, while the Ag alloy reflection film and the resin layer are in direct contact with each other, Ag on the reflection film side diffuses and aggregates to adjacent resin layer side whereby environmental resistance such as light resistance or moist heat resistance can be improved and, at the same time, the high environmental resistance can be maintained for a long period of time.;COPYRIGHT: (C)2008,JPO&INPIT
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