Structure and Physical Properties of ZnO-Doped KNLN Lead-Free Piezoelectric Ceramics
Composite Materials
Volume 1, Issue 1, December 2017, Pages: 1-7
Received: Oct. 27, 2016; Accepted: Nov. 22, 2016; Published: Jan. 3, 2017
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Authors
Phan Dinh Gio, Department of Physics, Hue University College of Sciences, Hue City, Vietnam
Van Thi Bich Thuy, Department of Physics, Hue University College of Sciences, Hue City, Vietnam
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Abstract
The ZnO-doped 0.96(K0.5Na0.5)NbO3–0.04LiNbO3 (KNLN) piezoelectric ceramics were prepared by conventional ceramics process, using oxides and carbonates mixture, sintered in the solid state at 1050°C. Effect of ZnO on structure and dielectric, ferroelectric, piezoelectric properties of KNLN ceramics were studied. The experimental results showed that the ZnO-doped KNLN ceramics have the pure perovskite structure with orthorhombic symmetry at x  0.5 wt.% ZnO. The ZnO addition significantly improved the electrical properties of KNLN ceramics. At ZnO content of 0.5 wt.%, the electrical properties of ceramics are the best: kp=0.35, kt=0.45, d31=52pC/N, Qm=33, Pr=8.0 C/cm2.
Keywords
Lead-Free Piezoceramics, Crystal Structure, ZnO Addition, Dielectric
To cite this article
Phan Dinh Gio, Van Thi Bich Thuy, Structure and Physical Properties of ZnO-Doped KNLN Lead-Free Piezoelectric Ceramics, Composite Materials. Vol. 1, No. 1, 2017, pp. 1-7. doi: 10.11648/j.cm.20170101.11
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Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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