Effect of sintering temperature on the dielectric and microstructure properties of cacu3ti3,90 co0,10 o12 ceramic
International Journal of Development Research
Effect of sintering temperature on the dielectric and microstructure properties of cacu3ti3,90 co0,10 o12 ceramic
Received 19th January, 2017; Received in revised form 07th February, 2017; Accepted 24th March, 2017; Published online 30th April, 2017
Copyright©2017, Hadi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
In the present paper, nanosized calcium copper titanate (CaCu3Ti4-xCoxO12, CCTCO, x=0.10) powders were synthesized by solid state route. The microstructure and dielectric properties of polycrystalline CCTO samples sintered at different temperatures were investigated. The results which obtained showed grain growth with increasing of sintering temperature. On other hand, dielectric constant of CCTCO sintered at 950 and 1000 °C showed frequency and temperature dependence in the range of 103 to 2.106 Hz, and gives values of 903 and 995 measured at room temperature and 103 Hz, respectively. While the samples sintered at 1050°C showed weakly frequency and temperature dependence and gave a value larger of 11071. The Complex impedance used Cole–Cole plots to interpret the relaxation mechanism.
