Articles
  • Low-temperature dielectric and impedance properties of SrSn0.2Ti0.8O3 ceramics

  • Depeng Wang, Ruifeng Niu, Liqi Cui and Weitian 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

Tin-doped and undoped perovskite SrTiO3 ceramics were synthesized by solid-state reaction method using SrCO3, TiO2 and SnO2 powders as raw materials. When the samples sintered at 1400 ℃, the SrSn0.2Ti0.8O3 and SrTiO3 ceramics all crystallized in cubic structures. The lattice parameters of SrSn0.2Ti0.8O3 are slightly larger than that of SrTiO3 due to the bigger size of Sn4+ ions. The frequency-dependent dielectric and impedance properties of SrSn0.2Ti0.8O3 ceramics were investigated in the temperature range of 300-100 K. The obtained value of low-temperature dielectric permittivity is larger than 10000, and that of dielectric loss is lower than 0.018 at f = 1 kHz. The impedance spectra were used to show the grains and grain boundaries effects in SrSn0.2Ti0.8O3 ceramics. The calculated electrical conductivity demonstrates the semiconductor properties of the prepared samples. The results indicate that SrSn0.2Ti0.8O3 ceramics have potential applications in dielectric and electronic devices


Keywords: Ceramics, Dielectric properties, Impedance analysis

This Article

  • 2023; 24(3): 583-587

    Published on Jun 30, 2023

  • 10.36410/jcpr.2023.24.3.583
  • Received on Mar 23, 2023
  • Revised on May 31, 2023
  • Accepted on Jun 13, 2023

Correspondence to

  • Weitian Wang

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

  • E-mail: wtwang@ytu.edu.cn