| 摘要 |
According to this invention, there is provided an information recording medium including a substrate (10), a metal layer (11) formed on the substrate (10), and a recording layer (13) formed on the metal layer (11) and being formed a recorded portion and a non-recorded portion by changing optical characteristics by radiating a recording light beam, wherein the recording layer contains GeSbTe, a reflectance of the recorded portion of the recording layer (13) is higher than that of the non-recorded portion, and a reflectance of the non-recorded portion is not less than 10%. Focusing and tracking operations can be stably performed. <IMAGE> |
