Enhancement of non-ohmic properties of CoO DopeD ZnO varistor ceramics using soda lime silica (SLS) glass
ZnO-SLS-CoO (ZSC) based varistor ceramics were prepared at a high sintering temperature of 1100 ºC via the conventional solid-state method. The effect of SLS glass on the electrical properties was studied at the different concentration of SLS glass ranging from 0.5 mol% to 2 mol%. Scanning electro...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2020
|
| Online Access: | http://journalarticle.ukm.my/15358/ http://journalarticle.ukm.my/15358/1/16.pdf |
| _version_ | 1848813781248901120 |
|---|---|
| author | Nur Quratul Aini Ismail, Nor Kamilah Sa'at, Mohd Hafiz Mohd Zaid, |
| author_facet | Nur Quratul Aini Ismail, Nor Kamilah Sa'at, Mohd Hafiz Mohd Zaid, |
| author_sort | Nur Quratul Aini Ismail, |
| building | UKM Institutional Repository |
| collection | Online Access |
| description | ZnO-SLS-CoO (ZSC) based varistor ceramics were prepared at a high sintering temperature of 1100 ºC via the
conventional solid-state method. The effect of SLS glass on the electrical properties was studied at the different
concentration of SLS glass ranging from 0.5 mol% to 2 mol%. Scanning electron microscopy (SEM) and X-ray
diffractometer (XRD) were used to examine microstructure and crystal structure of the glass phase based ZSC varistor.
For the electrical characteristics, the source measuring unit was used. The result shows that SiO2 as the major chemical
compound found in the SLS glass that responsible for controlling the ZnO grain growth. When the concentration
of SLS glass higher than 1 mol%, the dominant peak of ZnO was found in XRD pattern, which is the primary phase
whereas the additional peak belongs to Zn2SiO4 as the secondary phase. ZSC varistor ceramics with 2 mol% of SLS
glass possessed the best electrical properties with the highest nonlinear coefficient α at 4.38 and the lowest leakage
current. The increasing value of α could be due to the increase in oxygen vacancies that eventually contributes to the
increase of Schottky barrier formation. |
| first_indexed | 2025-11-15T00:23:38Z |
| format | Article |
| id | oai:generic.eprints.org:15358 |
| institution | Universiti Kebangasaan Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T00:23:38Z |
| publishDate | 2020 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:generic.eprints.org:153582020-10-16T01:04:43Z http://journalarticle.ukm.my/15358/ Enhancement of non-ohmic properties of CoO DopeD ZnO varistor ceramics using soda lime silica (SLS) glass Nur Quratul Aini Ismail, Nor Kamilah Sa'at, Mohd Hafiz Mohd Zaid, ZnO-SLS-CoO (ZSC) based varistor ceramics were prepared at a high sintering temperature of 1100 ºC via the conventional solid-state method. The effect of SLS glass on the electrical properties was studied at the different concentration of SLS glass ranging from 0.5 mol% to 2 mol%. Scanning electron microscopy (SEM) and X-ray diffractometer (XRD) were used to examine microstructure and crystal structure of the glass phase based ZSC varistor. For the electrical characteristics, the source measuring unit was used. The result shows that SiO2 as the major chemical compound found in the SLS glass that responsible for controlling the ZnO grain growth. When the concentration of SLS glass higher than 1 mol%, the dominant peak of ZnO was found in XRD pattern, which is the primary phase whereas the additional peak belongs to Zn2SiO4 as the secondary phase. ZSC varistor ceramics with 2 mol% of SLS glass possessed the best electrical properties with the highest nonlinear coefficient α at 4.38 and the lowest leakage current. The increasing value of α could be due to the increase in oxygen vacancies that eventually contributes to the increase of Schottky barrier formation. Penerbit Universiti Kebangsaan Malaysia 2020-04 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/15358/1/16.pdf Nur Quratul Aini Ismail, and Nor Kamilah Sa'at, and Mohd Hafiz Mohd Zaid, (2020) Enhancement of non-ohmic properties of CoO DopeD ZnO varistor ceramics using soda lime silica (SLS) glass. Sains Malaysiana, 49 (4). pp. 871-876. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid49bil4_2020/KandunganJilid49Bil4_2020.html |
| spellingShingle | Nur Quratul Aini Ismail, Nor Kamilah Sa'at, Mohd Hafiz Mohd Zaid, Enhancement of non-ohmic properties of CoO DopeD ZnO varistor ceramics using soda lime silica (SLS) glass |
| title | Enhancement of non-ohmic properties of CoO DopeD ZnO varistor ceramics using soda lime silica (SLS) glass |
| title_full | Enhancement of non-ohmic properties of CoO DopeD ZnO varistor ceramics using soda lime silica (SLS) glass |
| title_fullStr | Enhancement of non-ohmic properties of CoO DopeD ZnO varistor ceramics using soda lime silica (SLS) glass |
| title_full_unstemmed | Enhancement of non-ohmic properties of CoO DopeD ZnO varistor ceramics using soda lime silica (SLS) glass |
| title_short | Enhancement of non-ohmic properties of CoO DopeD ZnO varistor ceramics using soda lime silica (SLS) glass |
| title_sort | enhancement of non-ohmic properties of coo doped zno varistor ceramics using soda lime silica (sls) glass |
| url | http://journalarticle.ukm.my/15358/ http://journalarticle.ukm.my/15358/ http://journalarticle.ukm.my/15358/1/16.pdf |