Abstract
Abstract The dc conductivity of glasses in the V2O5SnOTeO2 system was studied at temperatures between 200 and 473 K. At temperatures from room temperature (RT) to 200 K, a T − 1 4 (T is temperature) dependence of the conductivity was found, and variable-range hopping conduction was confirmed for these glasses. Mott parameters analysis gave the density of states at the Fermi level, N(EF) = 7.33 × 1019−8.45 × 1020cm−3 eV−1 at 230 K, and N(EF) increased with increasing V2O5 content (V2O5 = 40–50 mol%). At RT, variable-range hopping conduction was observed, which was attributable to large values of the disorder energy of the glasses, WD (= 0.08–0.09 eV), dominating the conduction.
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