Abstract

The dc electrical conductivities of (${\mathrm{TeO}}_{2}$${)}_{1\mathrm{\ensuremath{-}}\mathit{x}}$(${\mathrm{MoO}}_{3}$${)}_{\mathit{x}}$ (x=0.4, 0.5, 0.6 mol %) glasses are reported in the temperature range 100--400 K. Mott's model of thermally activated small polaron hopping between the nearest neighbors is found to be consistent with the data in the high-temperature range. Schnakenberg's model is found to be consistent with the temperature dependence of conductivity. The model parameters estimated from the best fits are reasonable and consistent with the composition of the glass.

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