| abstract |
A sputtering target formed from a material obtained by adding any one or both of Ta and Y elements to an In 2 O 3 -ZnO-SnO 2 compound oxide having SnO 2 as its primary component. The present invention relates to a thin film for an optical information recording medium (especially used as a protective film) that has stable film amorphous nature, realizes high deposition speed, is superior in adhesiveness and mechanical properties with the recording layer, has a high transmission factor, and is composed with a non-sulfide system, whereby the deterioration of the adjacent reflective layer and recording layer can be suppressed. The present invention also relates to a manufacturing method of such a thin film, and a sputtering target for use therein. Accordingly, in addition to improving the performance of the optical information recording medium, the productivity can also be considerably improved. |