| 摘要 |
PURPOSE:To prevent the strains of a recording body layer even when the recording body layer is thin and to improve writing and erasing characteristics by providing a strain relieving layer in the recoding body layer between a substrate and the recording body layer in the titled optical recoding medium wherein recording, reproducing, and erasing are possible. CONSTITUTION:Strains are generated in a recording body layer 2, when the film of the layer is formed. To relieve the strains, a metallic film contg. 35wt% Ag and the remainder of Zn is formed on a glass substrate 5 by sputtering as a strain relieving layer 4, and a layer of a Zn alloy contg. 37.5-40wt% Ag is formed thereon as the recording body layer 2 by sputtering. A protective layer film 1 is coated on the layer 2. The recording body layer is thus freed of strains, hence the phase transforming behavior of the recording body layer is normalized, and the writing and erasing is made possible even with a thin film. Accordingly, the writing and erasing characteristics can be improved. Besides, the instability of the phase due to aging at room temp. can be eliminated. |
