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Microstructural and nonlinear properties of Zn-V-Mn-Nb-O varistor ceramics with Gd2O3 substitution for low voltage application


Citation

Isa, Nor Hasanah and Zakaria, Azmi and Azis, Ra'ba'ah Syahidah and Rizwan, Zahid (2017) Microstructural and nonlinear properties of Zn-V-Mn-Nb-O varistor ceramics with Gd2O3 substitution for low voltage application. Solid State Phenomena, 268. 181 - 185. ISSN 1012-0394; ESSN: 1662-9779

Abstract

The effect of Gd2O3 substitution on the microstructural and electrical properties of Zn-V-Mn-Nb-O varistor ceramics sintered at 900°C was investigated. XRD, SEM, and EDAX results show that the GdMnO3 and GdVO4 phases formed at the grain boundaries and triple point junctions. Gd2O3 substitution inhibited the grain growth from 3.85 to 3.06 μm and increased the sintered ceramics density from 5.12 to 5.19 g/cm3. The samples containing the amount of 0.03 mol% Gd2O3 exhibit an optimum nonlinear coefficient α value which is 9.91, highest breakdown electrical field which is 88.48 V/mm and lowest leakage current density which is 0.11 mA/cm2 in low voltage application.


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Official URL or Download Paper: https://www.scientific.net/SSP.268.181

Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.4028/www.scientific.net/SSP.268.181
Publisher: Trans Tech Publications
Keywords: Electrical properties; Gd2O3; Low voltage varistor; Microstructure; Zinc oxide
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 29 Apr 2021 02:21
Last Modified: 29 Apr 2021 02:21
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.4028/www.scientific.net/SSP.268.181
URI: http://psasir.upm.edu.my/id/eprint/62420
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