Polarized Raman Scattering in Rare-Earth Fluoride Glasses

摘要

The polarized Raman spectra of rare-earth fluoride glasses based on BaF2 and ThF4, in combination with ZnF2, YF3, YbF3, LuF3, and/or AlF3, are reported and compared with those of other heavy-metal fluoride glasses. The spectra of rate-earth fluoride glasses, especially those containing large amounts of AlF3, have relatively broad and mostly depolarized features, suggesting that these glasses are more highly disordered than fluorozirconate and transition-metal fluoride glasses.