Table of Contents
ISRN Spectroscopy
Volume 2012, Article ID 410583, 11 pages
http://dx.doi.org/10.5402/2012/410583
Research Article

Study of Impedance Spectroscopy of Ferroelectric (Pb Sr)TiO3 Glass Ceramic System with Addition of La2O3

1Department of Physics, University of Lucknow, Lucknow 226007, India
2Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, Varanasi 221005, India
3Department of Applied Physics, Institute of Technology, Banaras Hindu University, Varanasi 221005, India

Received 13 December 2011; Accepted 23 January 2012

Academic Editors: W. A. Badawy and B. Liu

Copyright © 2012 C. R. Gautam 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

Various composition of glasses were prepared by melt-quenched method in the glass ceramic system 64[(PbxSr1-x)路OTiO2]-25[(2SiO2路B2O3)]-7[BaO]-3[K2O] doped with 1 mole % La2O3 (0.0饾懃0.4). Solid solution of perovskite lead strontium titanate (PST) phase was crystallized in borosilicate glassy matrix with controlled heat treatment schedule. X-ray diffraction analysis of these glass ceramic samples revealed that major crystalline phase of the entire glass ceramic samples bears cubic structure similar to SrTiO3 ceramic. Impedance spectroscopy studies were done in the frequency range 0.01鈥塇z to 3.0鈥塎Hz and in the temperature range 50 to 275掳C. Impedance and complex modulus spectroscopic techniques were used to find out the various contributions to the polarization process. Resistive and capacitive contributions of the processes relaxing in the highest frequency range were found to have low values in comparison to the resistive and capacitive contributions for the processes relaxing in lower and intermediate frequencies ranges.