| 摘要 |
PURPOSE:To enhance the stability of a recording mark of an amorphous state of a nonequilibrium phase and perform initializing, recording and erasing at a high speed by forming a recording layer of alloy of composition represented by a specific general formula. CONSTITUTION:A protective layer 3, a recording layer 2, a protective layer 4 and a protective layer 5 are sequentially formed in this order on a substrate 1 in an information recording medium. The recording layer 2 is formed of alloy of composition represented by a general formula (InxSbyTez)100-alphaMalpha (where x, y, z, alpha are atomic %, x+y+z=100, 40<=x<=60, 2<=y<=27, 23<=z<=47, 0<=alpha<=20, and M is at least one type of element selected from a group consisting of Cr, Co, Mn and Mg). The elements are added to improve antioxidative characteris tic, and its reliability is improved. Further, since the material of the above composition is easily made amorphous and its crystallizing velocity is high, initializing, recording and erasing can be performed at a high speed. |
