Abstract
The ternary bulk glasses of the form (60-x)V2O5-40TeO2-xSb with 0 ≤ x≤15 (in mol%) were prepared by using the standard melt quenching technique. The dc electrical conductivity of the mentioned samples was investigated within the temperature range of 296–408 K. The dc conductivities at 370 K, with values in the range of 4.80 × 10−6–1.08 × 10−4 S cm−1, were found to decrease with increase of Sb content. The experimental temperature-dependency of conductivity and the variation of the pre-exponential factor were interpreted in terms of polaron hopping theory. It founds that within the studied temperature range, the non-adiabatic small polaron hopping (NASPH) mechanism for electrons between different valent states of vanadium ions is applicable. The ratio of wave function decay (tunneling factor α) was found to be 2.26 × 108 cm−1 for samples with x ≥ 8 mol%.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.