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The frequency and temperature dependence of the dielectric constant and theelectrical conductivity of the transparent glasses in the composition0.5Cs2O-0.5Li2O-3B2O3 (CLBO) were investigated in the 100 Hz - 10 MHz frequencyrange. The dielectric constant for the as-quenched glass increased withincreasing temperature, exhibiting anomalies in the vicinity of the glasstransition and crystallization temperatures. The temperature coefficient ofdielectric constant was estimated (35 \pm 2 ppm.K-1) using Havinga's formula.The dielectric loss at 313 K is 0.005 \pm 0.0005 at all the frequenciesunderstudy. The activation energy associated with the electrical relaxationdetermined from the electric modulus spectra was found to be 1.73 \pm 0.05 eV,close to that of the activation energy obtained for DC conductivity (1.6 \pm0.06 eV). The frequency dependent electrical conductivity was analyzed usingJonscher's power law. The combination of these dielectric characteristicssuggests that these are good candidates for electrical energy storage deviceapplications.

Electrical Relaxation and Transport in 0.5Cs2O- 0.5Li2O-3B2O3 Glasses