| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an Ag alloy reflection film for optical recording medium which can maintain environmental resistance such as excellent moisture and heat resistance and light resistance for long term even when a metal reflection film and the resin layer directly have contact with each other, an optical information recording medium comprising the reflection film, and a sputtering target for making the reflection film. <P>SOLUTION: Regarding the Ag alloy reflection film for optical information recording medium, a specific element selected from Sm, Er, Tm, and Tb is included to improve the environmental resistance such as light resistance and moisture and heat resistance, and maintain the high environmental resistance for long term by inhibiting deterioration mode in which the Ag of the reflection film is diffused and aggregated into the adjacent resin layer when the Ag alloy reflection film and the resin layer directly contact with each other. <P>COPYRIGHT: (C)2008,JPO&INPIT |
