Structural, dielectric and impedance spectroscopy analysis of Ba5CaTi1.94Zn0.06Nb8O30 ferroelectric ceramic
作者： Amine Bendahhou , Karim Chourti , Rachid El Bouayadi , Soufian El Barkany , Mohamed Abou-Salama
DOI: 10.1039/D0RA05163B
关键词:
摘要: In this work, Zn co-doped tungsten bronze having nominal formula Ba5CaTi1.94Zn0.06Nb8O30 has been synthesized and systematically studied for structure, dielectric electrical properties. The formation of the phase tetragonal with space group P4bm occurrence oxygen vacancies were verified by Rietveld refinement using X-ray diffraction data. Scanning electron microscopy (SEM) ceramic shows high densification, low porosity, homogeneous distribution grains different sizes over total surface. sample a anomaly ferroelectric paraelectric type at 262 °C, non-relaxor diffuse transition. property (complex impedance Z*, complex permittivity e*, modulus M*) investigated non-destructive spectroscopy (CIS) as function frequency temperatures. Grains grain boundaries conduction is detected from spectrum fitting Nyquist plot an appropriate circuit. indicates negative temperature coefficient resistance (NTCR) character ceramic. variation AC conductivity reveals that compound Arrhenius-type behavior conductivity. DC conductivities have studied. presence non-Debye relaxations was analysis.
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sci-hub.st 参考文章(67)
Ill Won Kim, Chang Won Ahn, Jin Soo Kim, Tae Kwon Song, Jong-Sung Bae, Byung Chun Choi, Jung-Hyun Jeong, Jae Shin Lee, Low-frequency dielectric relaxation and ac conduction of SrBi2Ta2O9 thin film grown by pulsed laser deposition Applied Physics Letters. ,vol. 80, pp. 4006- 4008 ,(2002) , 10.1063/1.1482138
J ROSSMACDONALD, Note on the parameterization of the constant-phase admittance element Solid State Ionics. ,vol. 13, pp. 147- 149 ,(1984) , 10.1016/0167-2738(84)90049-3
Marta Prades, Héctor Beltrán, Nahum Masó, Eloisa Cordoncillo, Anthony R. West, Phase transition hysteresis and anomalous Curie-Weiss behavior of ferroelectric tetragonal tungsten bronzes Ba2RETi2Nb3O15: RE = Nd, Sm Journal of Applied Physics. ,vol. 104, pp. 104118- ,(2008) , 10.1063/1.3021460
Zhiyong Zhou, Yuchen Li, Lihui Yang, Xianlin Dong, Haixue Yan, Effect of annealing on dielectric behavior and electrical conduction of W6+ doped Bi3TiNbO9 ceramics Applied Physics Letters. ,vol. 90, pp. 212908- ,(2007) , 10.1063/1.2740189
Hongqiang Ma, Kun Lin, Laijun Liu, Baoling Yang, Yangchun Rong, Jun Chen, Jinxia Deng, Shogo Kawaguchi, Kenichi Kato, Xianran Xing, Structure and electrical properties of tetragonal tungsten bronze Ba2CeFeNb4O15 RSC Advances. ,vol. 5, pp. 76957- 76962 ,(2015) , 10.1039/C5RA16115K
Xiao Li Zhu, Xiao Qiang Liu, Xiang Ming Chen, Crystal Structure and Dielectric Properties of Sr5RTi3Nb7O30 (R=La, Nd, Sm, and Eu) Tungsten Bronze Ceramics Journal of the American Ceramic Society. ,vol. 94, pp. 1829- 1836 ,(2011) , 10.1111/J.1551-2916.2010.04327.X
T. Badapanda, V. Senthil, S.K. Rout, L.S. Cavalcante, A.Z. Simões, T.P. Sinha, S. Panigrahi, M.M. de Jesus, E. Longo, J.A. Varela, Rietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O3 ceramic Current Applied Physics. ,vol. 11, pp. 1282- 1293 ,(2011) , 10.1016/J.CAP.2011.03.056
M.R. Shoar Abouzari, F. Berkemeier, G. Schmitz, D. Wilmer, On the physical interpretation of constant phase elements Solid State Ionics. ,vol. 180, pp. 922- 927 ,(2009) , 10.1016/J.SSI.2009.04.002
Gurvinderjit Singh, V. S. Tiwari, P. K. Gupta, Role of oxygen vacancies on relaxation and conduction behavior of KNbO3 ceramic Journal of Applied Physics. ,vol. 107, pp. 064103- ,(2010) , 10.1063/1.3309745
Y.B. Yao, C.L. Mak, Effects of Ca-dopant on the pyroelectric, piezoelectric and dielectric properties of (Sr0.6Ba0.4)4Na2Nb10O30 ceramics Journal of Alloys and Compounds. ,vol. 544, pp. 87- 93 ,(2012) , 10.1016/J.JALLCOM.2012.07.038