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S. AUSTIN SUTHANTHIRARAJ1,* , V. S. SHANKARAN1
A new pseudo binary mixed system (BiI3)0.3 – (Ag2CrO4)0.7 prepared by melt quenching technique has already been identified as a fast ion conducting glassy system during an earlier investigations involving X-ray diffraction, FTIR and differential scanning calorimetry (DSC) studies, in conjunction with electrical conductivity analysis, exhibiting silver ionic conductivity (σ) of 7.1 x 10-3 Scm-1 at room temperature. This paper deals with frequency-dependent electrical data analysed in terms of conductivity spectra, dielectric loss and modulus formalisms, as a function of temperature over the domain 298 – 412 K. Whereas the observed frequency – dependent conductivity is found to obey Jonscher’s universal law, the modulus spectra of the present system tend to suggest a distribution of the relaxation times, which is found to be temperature independent. The variation of dielectric constant and conductivity with frequency has been explained by correlating the microscopic nature of the ionic conduction process occurring within the choosen system..
Fast ionic conductor, Silver ionic conduction, Modulus spectra, Dielectric constant.
S. AUSTIN SUTHANTHIRARAJ, V. S. SHANKARAN, Frequency response analysis of (BiI3)0.3 – (Ag2CrO4)0.7 fast ion conducting glassy system, Optoelectronics and Advanced Materials - Rapid Communications, 7, 5-6, May-June 2013, pp.425-429 (2013).
Submitted at: Sept. 2, 2012
Accepted at: June 12, 2013
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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