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Structural and transport properties of CdI2doped silver ion conducting system

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
136
Issue
2
Identifiers
DOI: 10.1016/j.ssc.2005.06.011
Keywords
  • A. Glass
  • A. Electrolyte
  • A. Super Ionic Conductors
  • D. Impedance
  • D. Conductivity

Abstract

Abstract The glass system xCdI 2–(100− x)[2Ag 2O–(0.7V 2O 5–0.3B 2O 3)] with different amount of dopant salt have been prepared by melt quenching technique. The sample obtained were pulverized and characterized by XRD, DSC, and FTIR. The electrical conductivity studies of the samples have been carried out at different temperatures and frequencies. Conductivity of the glasses increased with the increase in the CdI 2 contents and attains a value of 7.76×10 −4 S/cm at room temperature for the composition having x=30 mol% of CdI 2. Infrared spectroscopic studies on these glasses indicated that the oxyanion network was not affected by the addition of CdI 2. The transport number of the silver ion determined by emf method is nearly unity. The frequency dependence of electrical conductivity for various glass compositions at different temperature has been analyzed in terms of Jonscher's Universal expression. In the present CdI 2 doped system, the conduction is due to the Ag + ions attached to the AgI which is formed due to the exchange reaction between CdI 2 and Ag 2O.

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