부산대학교 도서관

The refractive index n and the absorption coefficient k of evaporated CeO/sub 2/ films were measured in the wavelength region from 0.22 mu to 1.0 mu . Films produced by direct evaporation of CoO/sub 2/ were found to be extremely durable and nonabsorbing in the visible and can be used as beam splitters and as high-index films in multilayer film combinations. The refractive index of CeO/ sub 2/ films depends strongly on the temperature of the substrate. An increase of the substrate temperature from 25 deg C to 300 deg C increases the refractive index of the condensed film material at lambda = 550 m mu , from about 2.2 to 2.4. The absorption of CeO/sub 2/ films increases strongly below 400 m mu and reaches a maximum at 300 m mu . Evaporated CeO/sub 2/ films show the same cubic structure as compact material and crystallize without preferred orientation on amorphous substrates. The crystal size in the condensed films increases with increasing temperature. (auth)