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Title: (Ba, Ca)(Ti, Zr)O3-BiFeO3 lead-free piezoelectric ceramics
Authors: Wu, J.
Wu, W.
Xiao, D.
Wang, J. 
Yang, Z.
Peng, Z.
Chen, Q.
Zhu, J.
Keywords: BiFeO3
Electrical properties
Lead-free piezoelectric ceramic
Issue Date: Mar-2012
Citation: Wu, J., Wu, W., Xiao, D., Wang, J., Yang, Z., Peng, Z., Chen, Q., Zhu, J. (2012-03). (Ba, Ca)(Ti, Zr)O3-BiFeO3 lead-free piezoelectric ceramics. Current Applied Physics 12 (2) : 534-538. ScholarBank@NUS Repository.
Abstract: Effects of BiFeO3 (BFO) content on the microstructure and electrical properties of Ba0.85Ca0.15Ti 0.90Zr0.10O3 (BCTZ) ceramics prepared by normal sintering in air were investigated. A stable solid solution is formed between BCTZ and BFO. The grain size gradually becomes smaller, and the ceramics become denser with increasing the BFO content. The Curie temperature, dielectric constant, and dielectric loss of BCTZ ceramics decrease simultaneously with the introduction of BFO. Moreover, the remanent polarization reaches a maximum at x = 0.2 mol%, and the coercive field continuously increases with increasing the BFO content due to the introduction of BFO with a higher coercive field. Improved piezoelectric properties (d33 ∼ 405 pC/N and k p ∼ 0.44) are demonstrated for the BCTZ ceramic with x = 0.2 mol%. © 2011 Elsevier B.V. All rights reserved.
Source Title: Current Applied Physics
ISSN: 15671739
DOI: 10.1016/j.cap.2011.08.016
Appears in Collections:Staff Publications

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