| 摘要 |
There is provided a laminated structure having a silicon carbide coating layer formed by sputtering on an alloy substrate, and the silicon carbide has a light transmittance of 70% or greater. It is preferable that the alloy substrate is a magnetic alloy or a phase--changing alloy, the impurity ratio on the surface of the silicon carbide coating layer is 1.0 .times. 10 12 atoms/cm2 or less and the thickness of th e silicon carbide coating layer is 10 to 100 nm. Since the laminated structure has a silicon carbide coating layer which is excellent in oxidation resistance, chlorine resistance, humidity resistance, and which has high refractive index, high light transmittance and the like, it is suitable for an optical disk recording medium such as a CD-RW, a DVD-RAM or the like. |
