| 摘要 |
The present invention provides a high-quality optical recording medium enabling direct overwriting even at a scanning speed of 20 m/s or more, which is as fast as 6X DVD or more as well as minimizing degradation thereof with time and to provide a method for producing the optical recording medium, a sputtering target, a method for using the optical recording medium, and an optical recording apparatus. To achieve the object, the optical recording medium is provided with at least a first protective layer, a recording layer, a second protective layer, and a reflective layer in this order or in reverse order, where the recording layer contains a composition expressed by the formula, (Ga ± Sb 1-± ) 1-²-³ Sn ² Zn ³
(where ±, ², and ³ respectively represent an atomic ratio of their respective elements and are expressed as 0.12 ‰¤ ± ‰¤ 0.20, 0.10 ‰¤ ² ‰¤ 0.25, and 0.02 ‰¤ ³ ‰¤ 0.10). |
