Translucent reflective film and reflective film for optical recording medium, and Ag alloy sputtering target for forming such translucent reflective film and reflective film

• Main Authors: MISHIMA AKIFUMI, YAMAGUCHI GOU, KOMIYAMA SHOZO
• Format: Patent
• Language: Chinese; English
• Published: 14.01.2009
• Subjects: ALLOYS; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; PHYSICS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TREATMENT OF ALLOYS OR NON-FERROUS METALS

Disclosed is a translucent reflective film or reflective film for optical recording media, which is composed of a silver alloy having a composition consisting of 0.001-0.1% by mass of Ca, 0.05-1% by mass of Mg, and the balance of Ag and unavoidable impurities. Also disclosed is a target composed of a silver alloy having a composition consisting of 0.001-0.1% by mass of Ca, 0.05-1% by mass of Mg, and the balance of Ag and unavoidable impurities. Further disclosed is a translucent reflective film for optical recording media, which is composed of a silver alloy having a composition consisting of 0.05-1% by mass of Mg, 0.05-1% by mass in total of one or more elements selected from Eu, Pr, Ce and Sm, and the balance of Ag and unavoidable impurities. Still further disclosed is an Ag alloy sputtering target for forming a translucent reflective film for optical recording media, which sputtering target is composed of a silver alloy having a composition consisting of 0.05-1% by mass of Mg, 0.05-1% by mass in total of o