सार

The glasses with composition 64TeO2-15CdO-(20-x)ZnO-xBaO-1V2O5 (x= 0, 5, 10, 15 
and 20 mol%) were prepared by conventional melt quenching technique. X-ray diffraction 
method was used to confirms the non crystalline behavior of the glass samples. The optical 
absorption studies shows that the cut-off wavelength decreases while optical band gap energy 
(Eopt) and Urbach energy (∆E) values increase with an increase of BaO composition. The 
Refractive index ( ) calculated from Eopt was found to decrease with an increase of BaO mol 
percentage. The physical parameters such as density (ρ), molar volume (Vm), oxygen packing 
density (OPD), molar refraction (Rm) and metallization criterion (M) estimated and discussed.