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Published in: Journal of Materials Science: Materials in Electronics 16/2018

22-06-2018

Influence of BiFeO3 doping on structural and electrical properties of KNN–LS based lead-free piezoceramics

Authors: Hong-Wei Zhu, Xue-Jie Wang, De-Yi Zheng, Ze-Hui Peng, Liu Yang, Chao Fang

Published in: Journal of Materials Science: Materials in Electronics | Issue 16/2018

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Abstract

(0.94 − x)K0.48Na0.52NbO3–0.06LiSbO3–xBiFeO3 (KNN–LS–xBF, x = 0, 0.1, 0.3, 0.5 and 0.7%) lead- free piezoelectric ceramics were prepared by a traditional two-step solid-state reaction method. The effect of BiFeO3 (BF) content on the phase structure, microstructure, electrical properties and dielectric relaxation of KNN–LS ceramics was investigated. The XRD patterns show that all ceramics have a pure perovskite structure. BiFeO3 doping can promote the grain growth and improve electrical properties. When x = 0.3% in KNN–LS–BF, it exhibits optimum electrical performance: d33 = 285 pC/N, kp = 54.3%, εr = 2185, tanδ = 1.92%, Qm = 66, Tc = 340 °C, γ = 1.4732, Ec = 17.76 kV/cm, Pr = 21.48 µC/cm2. It is indicated that the ceramics have the potentialities to be used as the high temperature low frequency filters.

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Metadata
Title
Influence of BiFeO3 doping on structural and electrical properties of KNN–LS based lead-free piezoceramics
Authors
Hong-Wei Zhu
Xue-Jie Wang
De-Yi Zheng
Ze-Hui Peng
Liu Yang
Chao Fang
Publication date
22-06-2018
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 16/2018
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-018-9515-0

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