Articles
  • Studies of structural and electrical properties of La-Mg-Mn-Ti-O ceramic

  • Siti Hashimah bt Mohamad Hanifa, Walter Charles Primusa,*, Khamirul Amin Matorib, Josephine Liew Ying Chyib and Aaliyawani Ezzerin Sinina

  • aDepartment of Science and Technology, Faculty of Humanities, Management and Science, Universiti Putra Malaysia Bintulu Campus, 97008 Bintulu, Sarawak, Malaysia
    bDepartment of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia

  • 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 samples with chemical formula La1-xMgxMn0.4Ti0.6O3 (x = 0.30, 0.40 and 0.50) were synthesized using solid-state reaction method. XRD of the samples shown the samples pattern attributed to the cubic structure with ‘a’ = 3.8943 and its space group Pm3m. The SEM images display microstructure of the sample were porous and the grains are merged with unequal sizes distributed inhomogeously throughout the samples with irregular boundaries. The sample of x = 0.4 was the most porous than the others. The electrical properties were measured using LCR meter with the frequency range from 0.01 Hz until 100 KHz and in a temperature range of 313 K until 373 K. The electrical properties of the samples were study by analyzed the dielectric constant, ε’, dielectric loss, ε”, and tan δ. The results for dielectric constant and dielectric loss showed the higher values were located at lower frequency region which suggest that the samples were having interfacial polarization. Tan δ shows the lower value at higher frequency and lower temperature. By doping Mg, it decreases the dielectric loss and increasing the Mg doping it increases the dielectric constant


Keywords: Mg2+ Doping, Dielectric, Ceramic, Solid state reaction method

This Article

  • 2023; 24(3): 446-452

    Published on Jun 30, 2023

  • 10.36410/jcpr.2023.24.3.446
  • Received on Sep 27, 2022
  • Revised on Feb 10, 2023
  • Accepted on Feb 23, 2023

Correspondence to

  • Walter Charles Primus

  • Department of Science and Technology, Faculty of Humanities, Management and Science, Universiti Putra Malaysia Bintulu Campus, 97008 Bintulu, Sarawak, Malaysia
    Tel : +6086-855741 Fax: +6086-855428

  • E-mail: walter@upm.edu.my