Transport and physical properties of V2O5-P2O5-B2O3 glasses doped with Dy2O3

We investigate the DC transport properties of 60V 2 O 5 -5P 2 O 5 -(35− x )B 2 O 3 - x Dy 2 O 3 ( x = 0.4, 0.6, 0.8, 1.0 and 1.2 mol%) glasses as function of temperature which were prepared using the conventional melt-quenching method. These glasses are characterised by thermo gravimetric-differential thermal analysis (TG-DTA). Activation energy ( E DC ) is obtained from Arrhenius plots of temperature-dependent DC conductivity, and it is found to be 0.30 eV for high conducting glass. In order to understand the role of Dy 2 O 3 in these glasses, the density and molar volume are investigated. The results show that molar volume of the glass increases with the increasing of Dy 2 O 3 concentration. The ionic conductivity is found to be dominant over the electronic conductivity and varies between 82% and 96%.