2002 Volume 13 Pages 67-72
Na2O-Al2O3-P2O5 and Na2O-K2O-Al2O3-Ga2O3-P2O5 glasses were investigated with Rayleigh and Mandel'shtam-Brillouin scattering (RMBS) spectroscopy and high temperature ultrasonic study (HTUS). RMBS spectra intensities, their ratios and spectral shifts were determined as functions of glass compositions. Using the model of “freezing” of concentration, density, and anisotropy fluctuations in the process of cooling of a glass forming melt it was found that Rayleigh scattering losses are presumably a function of chemical microinhomogeneity of phosphate glasses. Low-scattering glass compositions were found.
