Abstract
Glasses with the composition, (80−x)TeO2−xLi2O–20ZnO with x=0, 5 and 10 (in mol%), were prepared by conventional melt quenching method. Properties such as density, molar volume, glass transition activation energy, crystallization activation energy and thermal stability as a function of Li2O content are reported. FTIR results revealed that the glassy matrix is composed of TeO3, TeO3+1, TeO4 units and ZnO4 structural units. The optical transmission studies revealed that the λcutoff wavelength and optical band gap energy (Eopt) decreases with the addition and increase of Li2O content while Urbach energy (E0) and refractive index increases.
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