Microstructure and nonlinear properties of Zn-V-Mn-Nb-O varistor ceramics with Nd2O3 substitution
An abnormal grain growth of the ZnO-based ceramics due to highly reactive vanadium liquid phase disrupts its nonlinear properties. The effect of Nd2O3 concentration from 0.01 to 0.05 mol% on microstructure and electrical properties of ZnO-based varistor ceramics were investigated. The sample was fab...
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| Format: | Article |
| Language: | English |
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National Institute R and D of Materials Physics
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/62423/ http://psasir.upm.edu.my/id/eprint/62423/1/CERAMIC.pdf |
| _version_ | 1848854624150224896 |
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| author | Azis, Raba'ah Syahidah Zakaria, Azmi Abdullah, W. R. W. Isa, N. H. |
| author_facet | Azis, Raba'ah Syahidah Zakaria, Azmi Abdullah, W. R. W. Isa, N. H. |
| author_sort | Azis, Raba'ah Syahidah |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | An abnormal grain growth of the ZnO-based ceramics due to highly reactive vanadium liquid phase disrupts its nonlinear properties. The effect of Nd2O3 concentration from 0.01 to 0.05 mol% on microstructure and electrical properties of ZnO-based varistor ceramics were investigated. The sample was fabricated via solid state method and sintered at 900 °C for 2 h. XRD analysis shows the V2O5 and Zn2Nb2Mn2O9 phase formation. SEM analysis shows the grain is more uniform and enlarged to 3.54 μm with Nd2O3 addition up to 0.03 mol%. Nd2O3 also increased both the nonlinear coefficient α and the breakdown electric field, E1mA to an optimum of 9.94 and 75 V/mm. Beyond that concentration, oxygen O vacancy formed at the grain boundary and diminished the electrical properties. |
| first_indexed | 2025-11-15T11:12:49Z |
| format | Article |
| id | upm-62423 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:12:49Z |
| publishDate | 2017 |
| publisher | National Institute R and D of Materials Physics |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-624232021-01-21T15:43:42Z http://psasir.upm.edu.my/id/eprint/62423/ Microstructure and nonlinear properties of Zn-V-Mn-Nb-O varistor ceramics with Nd2O3 substitution Azis, Raba'ah Syahidah Zakaria, Azmi Abdullah, W. R. W. Isa, N. H. An abnormal grain growth of the ZnO-based ceramics due to highly reactive vanadium liquid phase disrupts its nonlinear properties. The effect of Nd2O3 concentration from 0.01 to 0.05 mol% on microstructure and electrical properties of ZnO-based varistor ceramics were investigated. The sample was fabricated via solid state method and sintered at 900 °C for 2 h. XRD analysis shows the V2O5 and Zn2Nb2Mn2O9 phase formation. SEM analysis shows the grain is more uniform and enlarged to 3.54 μm with Nd2O3 addition up to 0.03 mol%. Nd2O3 also increased both the nonlinear coefficient α and the breakdown electric field, E1mA to an optimum of 9.94 and 75 V/mm. Beyond that concentration, oxygen O vacancy formed at the grain boundary and diminished the electrical properties. National Institute R and D of Materials Physics 2017 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/62423/1/CERAMIC.pdf Azis, Raba'ah Syahidah and Zakaria, Azmi and Abdullah, W. R. W. and Isa, N. H. (2017) Microstructure and nonlinear properties of Zn-V-Mn-Nb-O varistor ceramics with Nd2O3 substitution. Digest Journal of Nanomaterials and Biostructures, 12 (3). 821 - 827. ISSN 1842-3582 https://chalcogen.ro/821_IsaNH.pdf |
| spellingShingle | Azis, Raba'ah Syahidah Zakaria, Azmi Abdullah, W. R. W. Isa, N. H. Microstructure and nonlinear properties of Zn-V-Mn-Nb-O varistor ceramics with Nd2O3 substitution |
| title | Microstructure and nonlinear properties of Zn-V-Mn-Nb-O varistor ceramics with Nd2O3 substitution |
| title_full | Microstructure and nonlinear properties of Zn-V-Mn-Nb-O varistor ceramics with Nd2O3 substitution |
| title_fullStr | Microstructure and nonlinear properties of Zn-V-Mn-Nb-O varistor ceramics with Nd2O3 substitution |
| title_full_unstemmed | Microstructure and nonlinear properties of Zn-V-Mn-Nb-O varistor ceramics with Nd2O3 substitution |
| title_short | Microstructure and nonlinear properties of Zn-V-Mn-Nb-O varistor ceramics with Nd2O3 substitution |
| title_sort | microstructure and nonlinear properties of zn-v-mn-nb-o varistor ceramics with nd2o3 substitution |
| url | http://psasir.upm.edu.my/id/eprint/62423/ http://psasir.upm.edu.my/id/eprint/62423/ http://psasir.upm.edu.my/id/eprint/62423/1/CERAMIC.pdf |