Improved giant dielectric properties in microwave flash combustion derived and microwave sintered CaCu 3 Ti 4 O 12 ceramics
作者： Ranjit Kumar , M. Zulfequar , T. D. Senguttuvan
DOI: 10.1007/S10832-018-0145-Y
关键词:
摘要: The nanocrystals of CaCu3Ti4O12 ceramic were prepared by microwave flash combustion technique. sintering powders was optimized to 1025 − 1075 °C for 20 min with heating and cooling rate 50 °C/min. Microstructural evaluation sintered sample carried out using SEM. dielectric properties measured in the frequency range 10–2 × 106 Hz temperature 30–100 °C. CCTO at had giant constant 53,300 100 Hz. It observed that greatly increased on a slight increase temperature. Modulus impedance analysis performed explore unusual response. Grain grain boundary resistance as 8 Ω 350,000 Ω, respectively. activation energy electro-conduction calculated 0.65 eV characteristic frequencies cole-cole plots. noticed thermally activated charge carriers long-range mobility.
springer.com
sci-hub.se 参考文章(32)
Pietro Delugas, Paola Alippi, Vincenzo Fiorentini, Vito Raineri, Reorientable dipolar Cu Ca antisite and anomalous screening in CaCu 3 Ti 4 O 12 Physical Review B. ,vol. 81, pp. 081104- ,(2010) , 10.1103/PHYSREVB.81.081104
Ranjit Kumar, M. Zulfequar, T. D. Senguttuvan, Dielectric properties of microwave flash combustion derived and spark plasma sintered CaCu3Ti4O12 ceramic: role of reduction in grain boundary activation energy Journal of Materials Science: Materials in Electronics. ,vol. 26, pp. 6718- 6722 ,(2015) , 10.1007/S10854-015-3275-X
Jianjun Liu, Chun-Gang Duan, Wei-Guo Yin, W. N. Mei, R. W. Smith, J. R. Hardy, Large Dielectric Constant and Maxwell-Wagner Relaxation in Bi 2/3 Cu 3 Ti 4 O 12 Physical Review B. ,vol. 70, pp. 144106- ,(2004) , 10.1103/PHYSREVB.70.144106
Hongtao Yu, Hanxing Liu, Dabing Luo, Minghe Cao, Microwave synthesis of high dielectric constant CaCu3Ti4O12 Journal of Materials Processing Technology. ,vol. 208, pp. 145- 148 ,(2008) , 10.1016/J.JMATPROTEC.2007.12.104
S. F. Shao, J. L. Zhang, P. Zheng, W. L. Zhong, C. L. Wang, Microstructure and electrical properties of CaCu3Ti4O12 ceramics Journal of Applied Physics. ,vol. 99, pp. 084106- ,(2006) , 10.1063/1.2191447
W.X. Yuan, Z.J. Li, Microstructures and dielectric properties of CaCu3Ti4O12 ceramics via combustion method European Physical Journal-applied Physics. ,vol. 57, pp. 11302- ,(2012) , 10.1051/EPJAP/2011110226
Jin-Cheng Zheng, AI Frenkel, L Wu, J Hanson, W Ku, ES Božin, SJL Billinge, Yimei Zhu, None, Nanoscale disorder and local electronic properties of CaCu 3 Ti 4 O 12 : An integrated study of electron, neutron, and x-ray diffraction, x-ray absorption fine structure, and first-principles calculations Physical Review B. ,vol. 81, pp. 144203- ,(2010) , 10.1103/PHYSREVB.81.144203
P. Jha, P. Arora, A.K. Ganguli, Polymeric citrate precursor route to the synthesis of the high dielectric constant oxide, CaCu3Ti4O12 Materials Letters. ,vol. 57, pp. 2443- 2446 ,(2003) , 10.1016/S0167-577X(02)01250-8
P. Thomas, K. Dwarakanath, K. B. R. Varma, T. R. N. Kutty, Synthesis of nanoparticles of the giant dielectric material, CaCu3Ti4O12 from a precursor route Journal of Thermal Analysis and Calorimetry. ,vol. 95, pp. 267- 272 ,(2009) , 10.1007/S10973-007-8981-Z
Jianjun Liu, Yucheng Sui, Chun-gang Duan, Wai-Ning Mei, Robert W. Smith, John R. Hardy, CaCu3Ti4O12: Low-Temperature Synthesis by Pyrolysis of an Organic Solution Chemistry of Materials. ,vol. 18, pp. 3878- 3882 ,(2006) , 10.1021/CM060836M