| 摘要 |
PROBLEM TO BE SOLVED: To decrease the production time, to obtain stable reflectance from an initial rewriting process and to provide a write-once phase-change type optical recording medium without requiring initialization in a (Ge,Sb)-Te phase- change type optical recording medium in which the initialization treatment of the recording layer is the rate determining step in the production. SOLUTION: This optical recording medium has a recording layer comprising at least one Te-based thin film and at least one reaction thin film on a transparent substrate, and the Te-based thin film is in contact with the reaction thin film. The Te-based thin film is produced by forming a Te-based material containing >=95 at.% Te. The reaction thin film is produced by forming a (Ge, Sb) material essentially comprising Ge and/or Sb. By mixing the reaction thin film material and Te, a phase-change recording material is produced. After the recording layer is formed, the layer is irradiated with continuous laser light to mix the Te-based thin film material and the reaction thin film material. |
