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IJPAP Vol.48(01) [January 2010] >

Title: Transport properties of super ionic AgI-Ag2O-V2O5-TeO2 glasses
Authors: Sharma, Poonam
Kanchan, D K
Pant, Meenakshi
Padmasree, K
Keywords: Super ionic conductivity
Glass transition temperature
Issue Date: Jan-2010
Publisher: CSIR
Abstract: The conductivity of super ionic conducting glass system xAgI : ( 95-x) [Ag2O:2V2O5]: 5TeO2, where 40 ≤ ×≤65 has been studied by impedance spectroscopy. The spectrum has been recorded in temperature range 296-353 K with frequency range 10 Hz to 32 MHz. The glass samples have been characterized by X-ray, FTIR and DSC studies. The FTIR spectra reveal that the network structure remains essentially the same with AgI concentration. The temperature dependent conductivity satisfies the Arrhenius relationship. The measurements show that the conductivity increases from σ = 7.62 ×10-7 to 1.15×10-4 S/cm with increasing AgI content, while the activation energy decreases from 0.49 to 0.30 eV. The frequency dependence of the ac conductivity follows the Jonscher’s universal power law σ( ω) = σdc + Aωs. The dielectric properties are calculated using impedance data for all the glass samples.
Page(s): 39-46
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.48(01) [January 2010]

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