Articles
  • Effect of calcium addition on microstructure and electrical properties of lead zirconate titanate ceramic compositions near MPB

  • Anupama Sachdevaa,*, Aarushib, Jagneet Kaur Ananda and R. P. Tandonc

  • aKeshav Mahavidyalaya, University of Delhi, Delhi 110034, India
    bDepartment of Electrical Engineering, Texas A&M University, College Station, Texas 77840, USA
    cDepartment of Physics and Astrophysics, University of Delhi, Delhi 110007, India

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Calcium modified lead zirconate titanate ceramic compositions Pb(1-x)CaxZr0.52Ti0.48O3, where x=0, 0.02, 0.04, 0.06, 0.08, 0.1, have been prepared by solid state reaction method using wet milling. Scanning Electron Microscopy (SEM) studies have been carried out to see the variation in the grain size with calcium addition. A correlation of the dielectric constant and dielectric loss with grain size effect is presented in this paper. A monotonic decrease in the transition temperature along with more diffuseness in paraelectric-ferroelectric phase transition is observed with increasing calcium content. The values of activation energy (Ea) for the samples, calculated for ferroelectric region near phase transition temperature, are found to be in the range of approximately 0.6-1.0 eV which reflects that the main charge carriers responsible for conduction at higher temperatures are oxygen ion vacancies


Keywords: PZT, Perovskite, SEM, Solid state reaction

This Article

  • 2022; 23(1): 99-108

    Published on Feb 28, 2022

  • 10.36410/jcpr.2022.23.1.99
  • Received on Sep 18, 2021
  • Revised on Oct 23, 2021
  • Accepted on Oct 30, 2021

Correspondence to

  • Anupama Sachdeva

  • Keshav Mahavidyalaya, University of Delhi, Delhi 110034, India
    Tel : +91-11-47083152 Fax: +91-11-47083152

  • E-mail: anupama_sachdeva@hotmail.com