Influence of vanadium oxide on non-isothermal crystallization kinetics of zinc lithium borate glasses

Glasses B2O3-Li2O-ZnO-V2O5 are investigated for their structural, thermal properties and non-isothermal crystallization kinetics. ZnO is systematically replaced with V2O5 in order to get insight on structural and thermal behavior of the glasses. Differential thermal analysis (DTA) curves of glasses are obtained at various heating rates. The characteristic temperatures obtained from DTA are used as inputs for various mathematical models to calculate activation energies for various thermodynamic processes and thermal parameters such as Avrami's constant, thermal stability, and fragility index. The obtained results are correlated to extract valuable information on the crystallization behavior of the glasses and also the structural role played by the transition metal oxides in the present oxide glasses. V2O5 increased the bulk crystallization and acted as modifier in the present glasses. The results are expected to help designing glasses and specifying their operating temperature ranges for probable applications in photonics and as cathode materials in electronics.