| 摘要 |
A sputtering target for fabricating a recording layer of a phase-change type optical recording medium contains a compound or mixture including as constituent elemets Ag, In, Te and Sb with the respective atomic percent (atom. %) of alpha , beta , gamma and delta thereof being in the relationship of 2</= alpha </=30, 3</= beta </=30, 10</= gamma </=50, 15</= delta </=83 and alpha + beta + gamma + delta =100, and a method of producing the above sputtering target is provided. A phase-change type optical recording medium includes a recording layer containing as constituent elements Ag, In, Te and Sb with the respective atomic percent of alpha , beta , gamma and delta thereof being in the relationship of 0< alpha </=30, 0< beta </=30, 10</= gamma </=50, 10</= delta </=80, and alpha + beta + gamma + delta =100, and is capable of recording and erasing information by utilizing the phase changes of a recording material in the recording layer. A method of fabricating the above phase-change type optical recording medium is also provided.
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| 申请人 |
RICOH COMPANY, LTD. |
发明人 |
YAMADA, KATSUYUKI;IWASAKI, HIROKO;IDE, YUKIO;HARIGAYA, MAKOTO;KAGEYAMA, YOSHIYUKI;DEGUCHI, HIROSHI;TAKAHASHI, MASAETSU;HAYASHI, YOSHITAKA |
