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Volume 8
Issue 12
10.3390/ma8125477
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Article

Piezoelectric, Mechanical and Acoustic Properties of KNaNbOF5 from First-Principles Calculations

by
Han Han
1,*,
Cheng Cheng
1,
Xiao-Gen Xiong
1,
Jing Su
1,
Jian-Xing Dai
1,
Hui Wang
2,
Gen Yin
3 and
Ping Huai
1,*
1
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
2
School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471003, China
3
Department of Electrical Engineering, University of California, Riverside, CA 92521-0204, USA
*
Authors to whom correspondence should be addressed.
Academic Editor: Lorena Pardo
Materials 2015, 8(12), 8578-8589; https://doi.org/10.3390/ma8125477
Received: 24 September 2015 / Revised: 13 October 2015 / Accepted: 12 November 2015 / Published: 9 December 2015
(This article belongs to the Special Issue Piezoelectric Materials)
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Abstract

Recently, a noncentrosymmetric crystal, KNaNbOF5, has attracted attention due to its potential to present piezoelectric properties. Although α- and β-KNaNbOF5 are similar in their stoichiometries, their structural frameworks, and their synthetic routes, the two phases exhibit very different properties. This paper presents, from first-principles calculations, comparative studies of the structural, electronic, piezoelectric, and elastic properties of the α and the β phase of the material. Based on the Christoffel equation, the slowness surface of the acoustic waves is obtained to describe its acoustic prosperities. These results may benefit further applications of KNaNbOF5. View Full-Text
Keywords: piezoelectric materials; density functional calculation; mechanical properties; acoustic properties piezoelectric materials; density functional calculation; mechanical properties; acoustic properties
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
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MDPI and ACS Style

Han, H.; Cheng, C.; Xiong, X.-G.; Su, J.; Dai, J.-X.; Wang, H.; Yin, G.; Huai, P. Piezoelectric, Mechanical and Acoustic Properties of KNaNbOF5 from First-Principles Calculations. Materials 2015, 8, 8578-8589. https://doi.org/10.3390/ma8125477

AMA Style

Han H, Cheng C, Xiong X-G, Su J, Dai J-X, Wang H, Yin G, Huai P. Piezoelectric, Mechanical and Acoustic Properties of KNaNbOF5 from First-Principles Calculations. Materials. 2015; 8(12):8578-8589. https://doi.org/10.3390/ma8125477

Chicago/Turabian Style

Han, Han, Cheng Cheng, Xiao-Gen Xiong, Jing Su, Jian-Xing Dai, Hui Wang, Gen Yin, and Ping Huai. 2015. "Piezoelectric, Mechanical and Acoustic Properties of KNaNbOF5 from First-Principles Calculations" Materials 8, no. 12: 8578-8589. https://doi.org/10.3390/ma8125477

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