| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical recording medium being suitable for recording at a high linear velocity and also excellent in overwrite characteristics and having a high recording density and high reliability in shelf stability. SOLUTION: In the optical recording medium utilizing a reversible phase change between an amorphous phase and a crystalline phase brought about by casting a light beam on a recording layer, 90 atomic % or more of all atoms (preferably including Ag and/or Ge at least) constituting the recording layer is expressed by the following formula: GaαSbβTeγ (wherein α, β and γ denote atomic ratios being in the following ranges respectively: 0.01<=α<=0.1, 0.60<=β<=0.85, γ=1-α-β). |
