Table of Contents
Research Letters in Physics
Volume 2008 (2008), Article ID 249402, 4 pages
http://dx.doi.org/10.1155/2008/249402
Research Letter

Ionic Conductivity and Phase Transition Behaviour in 4AgI-(1- 𝑥 ) P b I 2 -2 𝑥 CuI System

Physical Chemistry Division, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India

Received 10 June 2008; Accepted 17 July 2008

Academic Editor: Lian Gao

Copyright © 2008 Mohammed Hassan and Rfi Rafiuddin. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Samples of general formula 4AgI-(1- 𝑥 ) P b I 2 -2 𝑥 CuI, 𝑥 = 0 - 0 . 4 , have been prepared and investigated by XRD, DSC, and temperature-dependent conductivity studies. X-ray diffractograms showed the presence of binary system consisting of AgI and P b I 2 in the sample 𝑥 = 0 . Cu-substituted samples showed very similar diffractograms to that of the pure compound which indicates that no effect for the substitution on the nature of the binary system. DSC curves showed the presence of phase transition whose temperature increased with C u + ratio in the system. Ionic conductivity measurements confirmed the occurrence of the phase transition and showed that the high temperature phase is superionic conducting, whose conductivity increases with the increasing C u + amount in the system.