Articles
  • The dielectric and electrical modulus properties of Ba(Al0.5Nb0.5)xTi1-xO3 ceramics

  • R.F. Niu, D.P. Wang, Z.H. Huang, and W.T. Wang*

  • School of Physics and Electronic Information, Yantai University, Yantai 264005, P.R. China

  • 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

In this work, a series of BaTiO3-based ceramic materials, Ba(Al0.5Nb0.5)xTi1-xO3 (x = 0, 0.04, 0.06, 0.08), was synthesized using a standard solid-state reaction technique. In the temperature range of 100~380 K, the frequency-dependent dielectric and electrical modulus properties were studied. A colossal dielectric permittivity (>1.5×104) and low dielectric loss (< 0.01) were demonstrated at the optimal doping concentration x = 0.04. The observed dielectric behavior of Ba(Al0.5Nb0.5)xTi1-xO3 ceramics can be attributed to the Universal Dielectric Response. The complex electrical modulus spectra indicate a significant decrease in capacitance and permittivity of the grains with increasing co-doping concentration. Our results provide insight into the role of donor and acceptor co-doping on the properties of BaTiO3-based ceramics, which is important for their use in dielectric and energy storage applications.


Keywords: Ceramics, Colossal permittivity, Dielectric properties, Complex modulus analysis.

This Article

  • 2024; 25(2): 300-305

    Published on Apr 30, 2024

  • 10.36410/jcpr.2024.25.2.300
  • Received on Feb 21, 2024
  • Revised on Mar 16, 2024
  • Accepted on Mar 19, 2024

Correspondence to

  • W.T. Wang

  • School of Physics and Electronic Information, Yantai University, Yantai 264005, P.R. China
    Tel : +86-13573512787 Fax: +86-535-6901947

  • E-mail: wtwang@ytu.edu.cn