| 摘要 |
A phase-change type optical information recording medium is disclosed, which medium comprises a substrate and a recording layer formed thereon. The recording layer comprises a phase-transition type compound consisting of 4 to 6 elements, having a chalcopyrite structure, represented by the following formula (I): XxYxZ2 (I) wherein X represents one or two elements selected from the group consisting of elements belonging to the groups Ib and IIb in a periodic table; Y represents one or two elements selected from the group consisting of elements belonging to the groups IIIb, IVb and Vb in the periodic table; and Z represents one or two elements selected from the group consisting of elements belonging to the groups Vb and VIb in the periodic table. |
