Synthesis and different optical properties of Gd2O3 doped sodium zinc tellurite glasses

A series of Gd2O3 doped sodium zinc tellurite [xGd(2)O(3)-(0.8-x) TeO2-0.1Na(2)O-0.1ZnO] glasses are prepared by the conventional melt quenching method and their optical properties have been studied. UV-vis spectrophotometric studies within the wavelength range from 230 nm-800 nm are carried out in the integrating sphere mode to study the effect of Gd2O3 doping on the optical band gap (E-g), refractive index (n), dielectric constant (epsilon(r)) and susceptibility (chi). Other physical properties like molar volume, molar refraction, polarizability, metallization criterion, number density of rare-earth ions (N), polaron radius (r(p)), inter ionic distance (r(i)), molar cation polarizability (Sigma alpha(1)), number of oxide ions in chemical composition (NO2-), optical band gap based electronic oxide ion polarizability (alpha(O2-)) and optical basicity (Lambda) of glass samples have been studied on the basis of UV-vis spectra and density profile of the different glasses.