Articles
  • Investigation of the Ba doping effect on the dielectric properties of LaFeO3 ceramics

  • Ziheng Huang, Depeng Wang, Xiaoyu Wu, Wei Li 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

Ba-doped LaFeO3 [La1-xBaxFeO3 (0 ≤ x ≤ 0.4)] ceramics were synthesized using the solid-state reaction method. The phase purity and structural characteristics were confirmed by X-ray diffraction, revealing that all samples exhibit a cubic structure with a Pm-3m space group. X-ray photoelectron spectroscopy was used to identify the chemical state of the component elements. The dielectric properties and conductivity measurements have been carried out. It was found that doping Ba into the ferrite LaFeO3 resulted in an enhancement of dielectric constant, with the dielectric loss showing Debye-type dipolar relaxation behavior. This behavior is linked to the polarization from small polarons caused by electron hopping between Fe2+ and Fe3+ ions.


Keywords: Ceramics, Dielectric properties, Conductivity.

This Article

  • 2025; 26(1): 37-42

    Published on Feb 28, 2025

  • 10.36410/jcpr.2025.26.1.37
  • Received on Aug 31, 2024
  • Revised on Nov 1, 2024
  • Accepted on Dec 17, 2024

Correspondence to

  • Weitian 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