Abstract: | This is a study of IR reflection spectra of systems of a thin Bi4X3O12(X=Si, Ge) film and a substrate of fused quartz v-SiO2 in the range 400–1600 cm−1 at T=295 K. Bands assigned to Bi4X3O12 are interpreted. It is found that single-photon processes are exhibited in the range 400–800 cm−1, while biphonon processes, in the range 800–1600 cm−1.
I. Franko State University of Lvov, 50 Dragomanov St., 290005, Lvov, Ukraine. Translated from Zhurnal Prikladnoi Spektroskopii,
Vol. 64, No. 4, pp. 494–498, July–August, 1997. |