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Synergistic effects of Pr6O11 and Co3O4 on electrical and microstructure features of ZnO-BaTiO3 varistor ceramics


Shaifudin, Muhamad Syaizwadi and Mohd Ghazali, Mohd Sabri and Wan Mohamad Kamaruzzaman, Wan Mohamad Ikhmal and Wan Abdullah, Wan Rafizah and Kassim, Syara and Ismail, Nur Quratul Aini and Sa’at, Nor Kamilah and Mohd Zaid, Mohd Hafiz and Mohd Fekeri, Maria Fazira and Matori, Khamirul Amin (2021) Synergistic effects of Pr6O11 and Co3O4 on electrical and microstructure features of ZnO-BaTiO3 varistor ceramics. Materials, 14 (4). pp. 1-17. ISSN 1996-1944


This paper investigated the effects of Pr6O11 and Co3O4 on the electrical properties of ZnO-BaTiO3 varistor ceramics. The Pr6O11 doping has a notable influence on the characteristics of the nonlinear coefficient, varistor voltage, and leakage current where the values varied from 2.29 to 2.69, 12.36 to 68.36 V/mm and 599.33 to 548.16 µA/cm2, respectively. The nonlinear varistor coefficient of 5.50 to 7.15 and the varistor voltage of 7.38 to 8.10 V/mm was also influenced by the use of Co3O4 as a dopant. When the amount of Co3O4 was above 0.5 wt.%, the leakage current increased from 202.41 to 302.71 μA/cm2. The varistor ceramics with 1.5 wt.% Pr6O11 shows good nonlinear electrical performance at higher breakdown voltage and reduced the leakage current of the ceramic materials. Besides, the varistor sample that was doped with 0.5 wt.% Co3O4 was able to enhance the nonlinear electrical properties at low breakdown voltage with a smaller value of leakage current.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.3390/ma14040702
Publisher: MDPI AG
Keywords: ZnO-BaTiO3; Varistor ceramics; Electrical properties; Co3O4; Pr6O11
Depositing User: Ms. Che Wa Zakaria
Date Deposited: 16 Feb 2023 07:30
Last Modified: 16 Feb 2023 07:30
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/ma14040702
URI: http://psasir.upm.edu.my/id/eprint/95246
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