Reflection spectra of alkali β″-aluminas in ultraviolet and vacuum-ultraviolet regions
Abstract Reflection spectra of alkali (Na, K and Rb) β″-alumina crystals were measured in vacuum-ultraviolet region by using a beam line with synchrotron radiation. Remarkable differences are observed between the spectra of alkali β- and alkali β″-aluminas in the electronic band-edge region below 10 eV. From these differences, the structure of the conduction plane (slab) will be discussed.