| 摘要 |
PURPOSE:To improve SN ratio and stability in a laminate structure for heat mode metal recording formed on a substrate, by forming a metallic layer having a specified thickness between a metal and metallic compd. mixture layer and a metallic compd. stabilization layer. CONSTITUTION:A disc-shaped substrate 1 made of polymethyl methacrylate or the like is set in a vacuum vapor deposition chamber. A metal, such as Bi, Sb, or Cr, and a metal oxide, such as Sm2O3 or GeO2, are simultaneously and then, in the prescribed order, vapor deposited to form a metal and metallic compd. mixture layer 5, a metal layer 6, and a metallic compd. stabilization layer 4, and then, a metal layer 2 and a metallic compd. stabilization layer 3 are vapor deposited to obtain an information recording material. At that time, the metal layer 6 formed between the layer 5 and the layer 4 is formed to 3-20nm thickness, thus permitting the obtained recording material to be prevented from cracking and wrinkling even in a long run test at 70 deg.C and 90% RH for 15 days by virtue of the multilayered structure. |
