| 摘要 |
A sputtering target contains a target material including as constituent elements Ag, In, Te and Sb with the respective atomic percents (atom. %) of alpha, beta, gamma and delta thereof being in the relationship of 0.5<=alpha<8, 5 <=beta<=23, 17 <=gamma<=38, 32<=delta<=73, alpha<=beta, and alpha+beta+gamma+delta=100, and a method of producing the above sputtering target is provided. An optical recording medium includes a recording layer containing a phase-change recording material which includes as constituent elements Ag, In, Te and Sb with the respective atomic percents of alpha, beta, gamma and delta thereof being in the relationship of 1<=alpha<6, 7<=beta<=20, 20<=gamma<=35, 35<=delta<=70, and alpha+beta+gamma+delta=100, and is capable of recording and erasing information by utilizing the phase change of the recording material in the recording layer. A method of forming the above recording layer for the optical recording medium is also provided. In addition, there is provided an optical recording method using the above-mentioned phase-change optical recording medium. |
