Articles
  • Investigation of the structural and optical properties of sol gel processed Ho-doped BaTiO3 ceramics

  • Adil Moutaouaffiqa, Ali Didi Seddika, Abdelilah Rjeba, Mohammed Naciri Bennanib, Mohamed Najia and Salaheddine Sayouria,*

  • aLPAIS, Faculty of Sciences-DM, University of Sidi Mohamed Ben Abdellah, B.P. 1796 Fez-Atlas, Morocco
    bLCBAE, Chemistry Department, Moulay Ismail University, B.P. 11201 Zitoune, Meknes 50000, Morocco

  • 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

The pure BaTiO3 and Ho doped BaTiO3 (Ba1-xHoxTiO3 with x = 0, 0.25, 0.50, 0.75, 1, 1.5 and 2%), powders were prepared through the sol-gel process and structurally characterized by Thermogravimetric analysis (TGA), Differential thermal analysis (DTA), X-Ray diffraction (XRD), Fourier Transform Infrared (FT-IR) and Raman spectroscopy. The optical properties have been investigated using Ultraviolet-Visible (UV-Vis) transmittance-reflectance spectroscopy. X-ray diffraction (XRD). The results revealed that the prepared powders, calcined at 1000 °C for 4 hours, crystallized in the pure perovskite structure without the presence of secondary phases and showed a slight transition from the quadratic phase (pure BT) to the pseudo-cubic phase for the doped samples. From these results, we can also notice that Ho may occupy both Ba and Ti crystallographic sites. Raman and Fourier Transform Infrared (FT-IR) results are in accordance with those obtained from XRD characterizations. The values of the bandgap energies for the doped samples are lower than that of the pure BaTiO3 (3.26 eV), thus confirming energy softening effect of Ho


Keywords: Sol-gel, Ba1-xHoxTiO3 ceramics, Structural analysis, Gap energy

This Article

  • 2023; 24(6): 954-962

    Published on Dec 31, 2023

  • 10.36410/jcpr.2023.24.6.954
  • Received on Aug 17, 2023
  • Revised on Oct 14, 2023
  • Accepted on Oct 15, 2023

Correspondence to

  • Salaheddine Sayour

  • LPAIS, Faculty of Sciences-DM, University of Sidi Mohamed Ben Abdellah, B.P. 1796 Fez-Atlas, Morocco
    Tel : +212 6 73 78 52 88 Fax: +212 5 35 73 33 49

  • E-mail: ssayouri@gmail.com