Synthesis, Properties, and Structural Studies of Bismuth-Barium Tellurite Glasses Doped with Dy₂O₃

Abstract

A series of a new glass sample has been prepared with glass composition xDy2O3-(10-x) Bi2O3-20BaO-70TeO2 (where x=0,1,2,3,4,5, and 6 and mol %) have been produced through the traditional melt-quenching approach. The XRD (“X-Ray Diffraction”) pattern indicates that the glass system is amorphous by nature. The prepared glass system’s density has been examined with Archimedes’ principle, and the associated molar volume was estimated. Dy2O3 increases the density of the glass system, and it is observed that the molar volume is inversely related to the glass density. The absorption spectra from the wavelength range 200nm – 1100nm are applied to assess the glass’s optical properties. The direct and indirect optical band gap were computed using Tauc’s plots from the absorption spectra. The energy gap variation with the concentration of Dy2O3 has been discussed. The refractive index has also been calculated using the energy band gap values. Other physical parameters like electronic polarizability, and dielectric constant molar volume have been calculated. The structural and optical properties were examined via FTIR and RAMAN spectrometers.