06280684 is referenced by 217 patents and cites 14 patents.

A sputtering target for fabricating a recording layer of a phase-change type optical recording medium contains a compound or mixture including as constituent elements Ag, In, Te and Sb with the respective atomic percent (atom. %) of &agr;, &bgr;, &ggr; and &dgr; thereof being in the relationship of 2&lE;&agr;&lE;30, 3&lE;&bgr;&lE;30, 10&lE;&ggr;&lE;50, 15&lE;&dgr;&lE;83 and &agr;&plus;&bgr;&plus;&ggr;&plus;&dgr;&equals;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 &agr;, &bgr;, &ggr; and &dgr; thereof being in the relationship of 0<&agr;&lE;30, 0<&bgr;&lE;30, 10&lE;&ggr;&lE;50, 10&lE;&dgr;&lE;80, and &agr;&plus;&bgr;&plus;&ggr;&plus;&dgr;&equals;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.

Title
Sputtering target, method of producing the target, optical recording medium fabricated by using the sputtering target, and method of fabricating the optical recording medium
Application Number
9/488063
Publication Number
6280684 (B1)
Application Date
January 19, 2000
Publication Date
August 28, 2001
Inventor
Yoshitaka Hayashi
Machida
US
Masaetsu Takahashi
Yokohama
US
Hiroshi Deguchi
Yokohama
US
Yoshiyuki Kageyama
Yokohama
US
Makoto Harigaya
Hiratsuka
US
Yukio Ide
Mishima
US
Hiroko Iwasaki
Tokyo
US
Katsuyuki Yamada
Mishima
US
Agent
Cooper & Dunham
US
Assignee
Ricoh Company
US
IPC
B22F 1/00
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