Dielectric properties of bismuth titanate ceramics containing SiO2 and Nd2O3 as additives
| Autor: | M. Krapchanska, E. Kashchieva, Svetlin B. Parvanov, Stanislav S. Slavov, Yanko Dimitriev |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Bismuth titanate Energy-dispersive X-ray spectroscopy Analytical chemistry Mineralogy Relative permittivity Dielectric Conductivity Atmospheric temperature range lcsh:TP785-869 chemistry.chemical_compound lcsh:Clay industries. Ceramics. Glass chemistry visual_art Electrical properties Ceramics and Composites visual_art.visual_art_medium Dielectric loss Ceramic Microstructure Melt quenching |
| Zdroj: | Processing and Application of Ceramics, Vol 6, Iss 3, Pp 117-122 (2012) |
| ISSN: | 2406-1034 1820-6131 |
| DOI: | 10.2298/pac1203117s |
| Popis: | Bismuth-titanate ceramics containing SiO2 and Nd2O3 as additives are synthesized by melt quenching method in the system Bi2O3-TiO2-Nd2O3-SiO2 in the temperature range of 1250-1500 ?C. The phase composition of the obtained materials is determined by X-ray diffraction analysis and energy dispersive spectroscopy. Using scanning electron microscopy different microstructures are observed in the samples depending on the composition. Different values of conductivity, dielectric losses and relative permittivity are obtained depending on the composition. It is established that all investigated samples are dielectric materials with conductivity between 10-9 and 10-13 (??cm)-1 at room temperature, dielectric permittivity from 1000 to 3000 and dielectric losses tg? between 0.0002 and 0.1. |
| Databáze: | OpenAIRE |
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