The effects of additive on microstructure and electrical properties of batio3 ceramics
In this paper comparative investigations of microstructure and dielectric properties of BaTiO3 ceramics doped with 1.0 wt% of Nb2O5, MnCO3 and CaZrO3 have been done. BaTiO3 samples were prepared using conventional method of solid state sintering at 13000C for two hours. Two distinguish micro structu...
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| Format: | Article |
| Language: | English |
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Faculty of Technical Sciences in Cacak
2004-01-01
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| Series: | Serbian Journal of Electrical Engineering |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1451-4869/2004/1451-48690403089P.pdf |
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| author | Paunović Vesna V. Živković Ljiljana M. Vračar Ljubomir Mitić Vojislav Miljković Miroslav M. |
| author_facet | Paunović Vesna V. Živković Ljiljana M. Vračar Ljubomir Mitić Vojislav Miljković Miroslav M. |
| author_sort | Paunović Vesna V. |
| collection | DOAJ |
| description | In this paper comparative investigations of microstructure and dielectric properties of BaTiO3 ceramics doped with 1.0 wt% of Nb2O5, MnCO3 and CaZrO3 have been done. BaTiO3 samples were prepared using conventional method of solid state sintering at 13000C for two hours. Two distinguish micro structural regions can be observed in sample doped with Nb2O5. The first one, with a very small grained microstructure and the other one, with a rod like grains. In MnCO3 and CaZrO3 doped ceramics the uniform microstructure is formed with average grain size about 0.5- 2µm and 3-5µm respectively. The highest value of dielectric permittivity at room temperature and the greatest change of permittivity in function of temperature were observed in MnCO3/BaTiO3. In all investigated samples dielectric constant after initially large value at low frequency attains a constant value at f = 6kHz. A dissipation factor is independent of frequency greater than 10 kHz and, depending of systems, lies in the range from 0.035 to 0.25. At temperatures above Curie temperatures, the permittivity of all investigated samples follows a Curie- Weiss law. A slight shift of Curie temperature to the lower temperatures, in respect of Curie temperature for undoped BaTiO3, was observed in all investigated samples. |
| first_indexed | 2024-12-13T16:46:43Z |
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| id | doaj.art-c077fe2f6e3d4a4c80ffa7506d3575bc |
| institution | Directory Open Access Journal |
| issn | 1451-4869 2217-7183 |
| language | English |
| last_indexed | 2024-12-13T16:46:43Z |
| publishDate | 2004-01-01 |
| publisher | Faculty of Technical Sciences in Cacak |
| record_format | Article |
| series | Serbian Journal of Electrical Engineering |
| spelling | doaj.art-c077fe2f6e3d4a4c80ffa7506d3575bc2022-12-21T23:38:08ZengFaculty of Technical Sciences in CacakSerbian Journal of Electrical Engineering1451-48692217-71832004-01-0113899810.2298/SJEE0403089P1451-48690403089PThe effects of additive on microstructure and electrical properties of batio3 ceramicsPaunović Vesna V.0Živković Ljiljana M.1Vračar Ljubomir2Mitić Vojislav3Miljković Miroslav M.4Faculty of Electronic Engineering, NišFaculty of Electronic Engineering, NišFaculty of Electronic Engineering, NišFaculty of Electronic Engineering, NišCenter for Electron Microscopy University of NišIn this paper comparative investigations of microstructure and dielectric properties of BaTiO3 ceramics doped with 1.0 wt% of Nb2O5, MnCO3 and CaZrO3 have been done. BaTiO3 samples were prepared using conventional method of solid state sintering at 13000C for two hours. Two distinguish micro structural regions can be observed in sample doped with Nb2O5. The first one, with a very small grained microstructure and the other one, with a rod like grains. In MnCO3 and CaZrO3 doped ceramics the uniform microstructure is formed with average grain size about 0.5- 2µm and 3-5µm respectively. The highest value of dielectric permittivity at room temperature and the greatest change of permittivity in function of temperature were observed in MnCO3/BaTiO3. In all investigated samples dielectric constant after initially large value at low frequency attains a constant value at f = 6kHz. A dissipation factor is independent of frequency greater than 10 kHz and, depending of systems, lies in the range from 0.035 to 0.25. At temperatures above Curie temperatures, the permittivity of all investigated samples follows a Curie- Weiss law. A slight shift of Curie temperature to the lower temperatures, in respect of Curie temperature for undoped BaTiO3, was observed in all investigated samples.http://www.doiserbia.nb.rs/img/doi/1451-4869/2004/1451-48690403089P.pdfdoped BaTiO3 ceramicsdielectric propertiesmicrostructure |
| spellingShingle | Paunović Vesna V. Živković Ljiljana M. Vračar Ljubomir Mitić Vojislav Miljković Miroslav M. The effects of additive on microstructure and electrical properties of batio3 ceramics Serbian Journal of Electrical Engineering doped BaTiO3 ceramics dielectric properties microstructure |
| title | The effects of additive on microstructure and electrical properties of batio3 ceramics |
| title_full | The effects of additive on microstructure and electrical properties of batio3 ceramics |
| title_fullStr | The effects of additive on microstructure and electrical properties of batio3 ceramics |
| title_full_unstemmed | The effects of additive on microstructure and electrical properties of batio3 ceramics |
| title_short | The effects of additive on microstructure and electrical properties of batio3 ceramics |
| title_sort | effects of additive on microstructure and electrical properties of batio3 ceramics |
| topic | doped BaTiO3 ceramics dielectric properties microstructure |
| url | http://www.doiserbia.nb.rs/img/doi/1451-4869/2004/1451-48690403089P.pdf |
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