Table of Contents
Indian Journal of Materials Science
Volume 2013 (2013), Article ID 927908, 7 pages
http://dx.doi.org/10.1155/2013/927908
Research Article

Effect of Process Parameter Optimization in Reducing Sintering Temperature in the Synthesis and Characterization of Ba(Zn1/3Nb2/3)O3

Advance Material Research Laboratory, Department of Pure & Applied Physics, Guru Ghasidas University, Bilaspur 495 009, India

Received 25 June 2013; Accepted 28 July 2013

Academic Editors: A. Kajbafvala and P. Kluth

Copyright © 2013 P. K. Bajpai and K. N. Singh. 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

Controlling the cooling rate during calcination and sintering, phase pure perovskite Ba(Zn1/3Nb2/3)O3 has been prepared by simple solid state reaction route with density >93% at relatively low sintering of 1175°C making it compatible for microwave dielectric applications. The samples are characterized by X-ray diffraction analysis and scanning electron microscopy. The X-ray diffraction shows pure perovskite phase with cubic structure. The lattice constants were obtained a = 4.1032 Å. Detailed studies of ε′ and ε′′ show that the compound exhibits dielectric anomaly at 430°C. Material shows distributed relaxation at higher temperature. Impedance analysis revealed that the impedance is mainly due to the grains. AC conduction activation energies are estimated from Arrhenius plots, and conduction mechanism is discussed.