Abstract
In this present work a glass of the composition 22.5 BaTiO3+7.5 PbTiO3+70 V2O5 was prepared by applying the conventional melt quashing technique. Isothermal annealing of the glass was applied at 732K following differential scanning calorimetric analysis. The annealing was performed during different time intervals in the range of 0.25–24.0h. X-ray diffraction and transmission electron microscopy were used to identify different phases as well as particle size precipitated during the annealing process. Nanocomposite glass-ceramic precipitation was recognized with nonperiodic cyclic particle sizes as a function of the annealing period. DC electrical conductivity, on the other hand, was conducted in the temperature range from 300 to 625K. Electrical conductivity enhancement of the order 3×103 times after 2.5h of annealing was observed. Nonperiodic cyclic DC electrical conductivity behavior was also observed and which was encountered in a reverse manner with particle size development. Furthermore, the analysis of the electrical conduction mechanism predicts that both adiabatic and nonadiabatic small polaron hopping trend may describe the experimental data depending on the particle size.
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