Structural investigation and giant dielectric response of CaCu 3 Ti 4 O 12 ceramic by Nd/Zr co-doping for energy storage applications
作者： Suman Rani , Neetu Ahlawat , Kanta Maan Sangwan , Sunita Rani , R Punia
DOI: 10.1007/S10854-018-9150-9
关键词: Grain boundary 、 Ceramic 、 Materials science 、 Analytical chemistry 、 Dielectric 、 Capacitance 、 Grain size 、 Rietveld refinement 、 Calcium copper titanate 、 Dielectric spectroscopy
摘要: High performance dielectric materials are highly required for practical application energy storage technologies. In this work, high-k pristine and modified calcium copper titanate having nominal formula Ca0.95Nd0.05Cu3Ti4−xZrxO12 (x = 0.01, 0.03 & 0.10) were synthesized characterized structural properties. Single phase formation of the compositions was confirmed by X-ray diffraction patterns further analysed using Rietveld refinement technique. Phase purity ceramics Energy-dispersive Spectroscopy (EDX) analysis. SEM images demonstrated that grain size CCTO controlled Zr4+ ions due to solute drag effect. Impedance spectroscopy employed understand grain, boundaries electrode contribution response. Nyquist plots fitted with a 2R-CPE model which confirms non-ideality system. Substitution specific concentration Nd Zr improved properties high permittivity (e′ ~ 16,902) minimal tanδ (≤ 0.10) over wide frequency range. The giant e′ investigated system attributed internal barrier layer capacitance (IBLC) effect reduced accredited enhanced resistance substitution at Ti4+ site.
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sci-hub.se 参考文章(40)
Mao-hua Wang, Fu Zhou, Qiu-li Wang, Chao Yao, Synthesis of CaCu 3 Ti 4 O 12 powders and ceramics by sol-gel method using decanedioic acid and its dielectric properties Journal of Central South University. ,vol. 19, pp. 3385- 3389 ,(2012) , 10.1007/S11771-012-1418-2
J. Li, B. Fu, H. Lu, C. Huang, J.W. Sheng, Dielectric properties of Sm-doped CaCu3Ti4O12 ceramics Ceramics International. ,vol. 39, ,(2013) , 10.1016/J.CERAMINT.2012.10.052
Jianjun Liu, Chun-gang Duan, W. N. Mei, R. W. Smith, J. R. Hardy, Dielectric properties and Maxwell-Wagner relaxation of compounds ACu3Ti4O12 (A=Ca,Bi2∕3,Y2∕3,La2∕3) Journal of Applied Physics. ,vol. 98, pp. 093703- ,(2005) , 10.1063/1.2125117
Jun-ye Hua, Ya-ping Chen, Hua-jin Liu, Jia-feng Wu, Thermodynamic analysis of simplified dual-pressure ammonia-water absorption power cycle Journal of Central South University. ,vol. 19, pp. 797- 802 ,(2012) , 10.1007/S11771-012-1074-6
Chunhong MU, Huaiwu ZHANG, Yingli LIU, Yuanqiang SONG, Peng LIU, Rare earth doped CaCu3Ti4O12 electronic ceramics for high frequency applications Journal of Rare Earths. ,vol. 28, pp. 43- 47 ,(2010) , 10.1016/S1002-0721(09)60048-X
Tao Li, Yuncai Xue, Zhenping Chen, Fanggao Chang, Dielectric characteristics and positron annihilation study of Eu2O3-doped CaCu3Ti4O12 ceramics Materials Science and Engineering B-advanced Functional Solid-state Materials. ,vol. 158, pp. 58- 62 ,(2009) , 10.1016/J.MSEB.2009.01.002
Jakkree Boonlakhorn, Prasit Thongbai, Bundit Putasaeng, Teerapon Yamwong, Santi Maensiri, Very high-performance dielectric properties of Ca1−3x/2YbxCu3Ti4O12 ceramics Journal of Alloys and Compounds. ,vol. 612, pp. 103- 109 ,(2014) , 10.1016/J.JALLCOM.2014.05.143
Juan Rodríguez-Carvajal, Recent advances in magnetic structure determination by neutron powder diffraction Physica B: Condensed Matter. ,vol. 192, pp. 55- 69 ,(1993) , 10.1016/0921-4526(93)90108-I
VPB Marques, A Ries, AZ Simoes, MA Ramirez, José Arana Varela, Elson Longo, Evolution of CaCu3Ti4O12 varistor properties during heat treatment in vacuum Ceramics International. ,vol. 33, pp. 1187- 1190 ,(2007) , 10.1016/J.CERAMINT.2006.04.003
C. G. Koops, On the Dispersion of Resistivity and Dielectric Constant of Some Semiconductors at Audiofrequencies Physical Review. ,vol. 83, pp. 121- 124 ,(1951) , 10.1103/PHYSREV.83.121