| 摘要 |
PURPOSE:To provide an optical recording medium capable of stable recording even immediately after production thereof, by forcibly modifying an amorphous metal in a coated metallic film into a crystalline metal with heating. CONSTITUTION:An amorphous metal in a coated metallic layer is forcibly modified into a crystalline metal by heating, in an optical recording medium comprising a coated metallic film comprising tellurium and other elements on a base. The coated metallic film 1 comprises tellurium and other elements, for example, selenium, carbon, silver, (Ag) or titanium, and is formed as an amorphous film on the base 2 by sputtering, vacuum deposition or other known method, and crystallizing the film, by for example, leaving the optical recording medium for several hours to several tens hours in a thermostatic vessel maintained at a fixed temperature of about 60 deg.C. Immediately after the film 1 is placed in the vessel, the transmittance of the film is rapidly lowered to reach a minimum of 20-40% after several hours to several tens hours, and is then gradually raised to be stabilized. The period of time during which the medium is left in the vessel is set to a time required for the transmittance to be reduced to the minimum value. |
