Synthesis and dielectric properties of a new class of MX6Ti6O19 (M=Ba,Sr and Ca; X=Mg and Zn) ceramics |
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| Affiliation: | 1. Chemical Engineering College, Hebei Normal University of Science and Technology, Qinhuangdao 066600, China;2. College of science, Xi''an University of Science and Technology, Shannxi 710054, China;3. College of Material Science and Engineering, Tianjin University of Technology, Tianjin 300384, China;1. Centre for Environmental Radioactivity (CERAD CoE), NMBU, 1433 Ås, Norway;2. Norwegian University of Life Sciences (NMBU), Faculty of Veterinary Medicine and Biosciences, P.O. Box 8146 Dep., 0033 Oslo, Norway;3. Norwegian Institute for Water research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway;4. Norwegian University of Life Sciences (NMBU), Faculty of Environmental Sciences and Natural Resource Management, 1433 Ås, Norway;5. Norwegian Radiation Protection Authority (NRPA), Postboks 55, 1332 Østerås, Norway;6. Institute of Anatomy, University of Bern, Baltzerstrasse 2, 3000 Bern, Switzerland;7. McMaster University, Department of Biology, 1280 Main St. West Hamilton, Ontario, Canada;8. Norwegian Institute of Public Health (NIPH), PO Box 4404 Nydalen, 0403 Oslo, Norway;1. Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan, ROC;2. Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, ROC;3. Advanced Research Center of Green Materials Science & Technology, Taipei 10617, Taiwan, ROC |
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| Abstract: | MX6Ti6O19 (M=Ba, Sr and Ca; X=Mg and Zn) ceramics have been synthesized by the conventional solid state ceramic route. The dielectric properties such as dielectric constant (εr), loss tangent (tanδ) and temperature coefficient of dielectric constant (τεr) of the sintered ceramic compacts are studied using an impedance analyzer up to the 13-MHz region. The zinc compositions have relatively high dielectric constant and low loss tangent compared to the Mg analogue. Out of the samples studied, BaZn6Ti6O19 ceramics show excellent dielectric properties. The structure and microstructure of these ceramic samples are also studied using powder X-ray diffraction, FTIR and SEM methods, and the results are presented. |
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