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arXiv · 1007.1822

Electrical transport properties of 0.5Li2O-0.5M2O-2B2O3 (M=Li, Na and K) glasses

G. Paramesh·Rahul Vaish·K. B. R. Varma
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Abstract

Transparent glasses in the system 0.5Li2O-0.5M2O-2B2O3 (M=Li, Na and K) were fabricated via the conventional melt quenching technique. Amorphous and glassy nature of the samples were confirmed via the X-ray powder diffraction and the differential scanning calorimetry, respectively. The frequency and temperature dependent characteristics of the dielectric relaxation and the electrical conductivity were investigated in the 100 Hz - 10 MHz frequency range. The imaginary part of the electric modulus spectra was modeled using an approximate solution of Kohrausch-Williams-Watts relation. The stretching exponent, β, was found to be temperature independent for 0.5Li2O-0.5Na2O-2B2O3 (LNBO) glasses. The activation energy associated with DC conductivity was found to be higher (1.25eV) for 0.5Li2O-0.5K2O-2B2O3 (LKBO) glasses than that of the other glass systems under study. This could be attributed to the mixed cationic effect.

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G. Paramesh, Rahul Vaish, K. B. R. Varma. 2010-07-12. Electrical transport properties of 0.5Li2O-0.5M2O-2B2O3 (M=Li, Na and K) glasses. https://doi.org/10.1016/j.jnoncrysol.2010.12.037

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