Glasses in the system of MnNbOF5–BaF2–BiF3–ErF3

The glasses in the MnNbOF5–BaF2–5BiF3–ErF3 system were obtained and their thermal and optical properties were studied. The specialties of crystallization depending on system composition are showed. The glass structure is discussed based on results of the IR and Raman spectra study. During the studies of inelastic light scattering, there revealed a strong photoluminescence, produced by erbium emission, whose intensity depends not only on the erbium trifluoride content in glass, but also on the glass network structure.