Ionic transport behavior of BaO containing sodium borosilicate glasses.

The present manuscript describes the preparation, characterization and electrical behavior of sodium borosilicate glasses with varying concentrations of BaO, while maintaining the SiO(2):B(2)O(3):Na(2)O ratios constant for all the samples. The effect of BaO substitution on the ionic conductivity of glasses was studied by ac impedance analyzer, below the glass transition temperature. The diffusion coefficient (D) of each sample has been determined from the values of electrical conductivity and density. The activation energy for sodium ion transport has been calculated from the values of diffusion coefficients at different temperatures. The electrical properties of the modified glass have been explained on the basis of the structural factor.