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Journal of Advanced Ceramics

Keywords

transport properties, melt quenching, Arrhenius plot, glasses

Abstract

We investigate the DC transport properties of 60V2O5–5P2O5–(35-x)B2O3–xDy2O3 (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 (EDC) 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 Dy2O3 in these glasses, the density and molar volume are investigated. The results show that molar volume of the glass increases with the increasing of Dy2O3 concentration. The ionic conductivity is found to be dominant over the electronic conductivity and varies between 82% and 96%.

Publisher

Tsinghua University Press

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