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Advances in Materials Science and Engineering
Volume 2017 (2017), Article ID 6123628, 8 pages
https://doi.org/10.1155/2017/6123628
Research Article

Electrical and Vibrational Studies of Na2K2Cu(MoO4)3

1Laboratory of Materials, Crystal Chemistry and Applied Thermodynamics, Faculty of Sciences of Tunis, University of Tunis El Manar, El Manar II, 2092 Tunis, Tunisia
2Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland

Correspondence should be addressed to Mohamed Faouzi Zid

Received 1 December 2016; Revised 6 March 2017; Accepted 27 March 2017; Published 11 June 2017

Academic Editor: Pascal Roussel

Copyright © 2017 Wassim Dridi et al. 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

The complex impedance of Na2K2Cu(MoO4)3 material has been investigated in the temperature range of 653–753 K and in the frequency range of 40 Hz–5 MHz. Electrical behavior of the studied material is explained through an equivalent circuit model which takes into account the contributions of grains and grains boundaries. The number of vibrational modes was calculated using group theoretical approach. The infrared and Raman spectra have also been measured and vibrational assignment has been proposed.