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VIRENDER KUNDU1, R. L. DHIMAN2, D. R. GOYAL3, A. S. MAAN3,*
The physical and electrical properties of semiconducting oxide glasses with composition xFe2O3 (70-x)V2O5.30 B2O3, (0≤ x ≤20) have been investigated. The glasses were prepared by normal melt quench technique. The conduction mechanism of these glasses was found to be adiabatic. The experimental data have been analyzed in the light of small polaron hopping theory. The density and molar volume of the present glass system are found to depend on Fe2O3 substitution. The dc conductivity was measured in the temperature range 313-473 K. The conductivity of all the glass compositions decreases with increasing Fe2O3 content and increases with increase in temperature. The observed value of conductivity at 430 K lies in the range 5.559 ×10-2 to 0.957×10-2 Sm-1. The various parameters such as activation energy, average site separation between transition metal ions, and polaron radius have been calculated and found consistent with Mott’s small polaron hopping theory.
Molar volume, Semiconducting glasses, DC conductivity, Polaron hopping.
VIRENDER KUNDU, R. L. DHIMAN, D. R. GOYAL, A. S. MAAN, Physical and electrical properties of semiconducting Fe2O3-V2O5-B2O3 glasses, Optoelectronics and Advanced Materials - Rapid Communications, 2, 7, July 2008, pp.428-432 (2008).
Submitted at: April 15, 2008
Accepted at: July 8, 2008
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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