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Published in: Journal of Materials Science: Materials in Electronics 4/2014

01-04-2014

Microstructure and piezoelectric properties of lead-free 0.95(Na0.5K0.5)NbO3–0.05(Bi0.5K0.5)Zr1−x Ti x O3 ceramics

Authors: Min Xiao, Dingquan Xiao, Zhuo Wang, Tao Huang, Jiagang Wu, Fangxu Li, Bo Wu, Jianguo Zhu

Published in: Journal of Materials Science: Materials in Electronics | Issue 4/2014

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Abstract

0.95(Na0.5K0.5)NbO3–0.05(Bi0.5K0.5)Zr1−x Ti x O3 (abbreviated as KNN–BKZT x ) ceramics were prepared by the conventional solid state method, and the effect of the Ti content on the surface morphology, crystalline structure, and electrical properties of KNN–BKZT x ceramics were mainly investigated. With the increase of Ti content, the temperature of the orthorhombic–tetragonal (O–T) phases transitions shifted to lower temperatures, and the O–T phase boundary of KNN–BKZT x ceramics was identified in the composition with 0 ≤ x ≤ 0.3 at room temperature. It was considered that the piezoelectric properties of the ceramics were enhanced significantly owing to the more possible polarization states resulting from the coexistence of two phases. The ceramic with x = 0.2 exhibited optimum properties: d 33 = 260 pC/N, k p = 0.38, and T C = 323 °C.

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Metadata
Title
Microstructure and piezoelectric properties of lead-free 0.95(Na0.5K0.5)NbO3–0.05(Bi0.5K0.5)Zr1−x Ti x O3 ceramics
Authors
Min Xiao
Dingquan Xiao
Zhuo Wang
Tao Huang
Jiagang Wu
Fangxu Li
Bo Wu
Jianguo Zhu
Publication date
01-04-2014
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 4/2014
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-014-1824-3

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