Ultrahigh Electromechanical Coupling and Its Thermal Stability in (Na1/2Bi1/2)TiO3-Based Lead-Free Single Crystals

Chao Chen; Li Yang; Xingan Jiang; Xiaokun Huang; Xiaoyi Gao; Na Tu; Kaizheng Shu; Xiangping Jiang; Shujun Zhang; Haosu Luo

doi:10.3390/cryst10060435

Crystals (May 2020)

Ultrahigh Electromechanical Coupling and Its Thermal Stability in (Na1/2Bi1/2)TiO3-Based Lead-Free Single Crystals

Chao Chen,
Li Yang,
Xingan Jiang,
Xiaokun Huang,
Xiaoyi Gao,
Na Tu,
Kaizheng Shu,
Xiangping Jiang,
Shujun Zhang,
Haosu Luo

Affiliations

Chao Chen: Jiangxi Key Laboratory of Advanced Ceramic Materials, National Engineering Research Center for Domestic & Building Ceramics, School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi 333403, China
Li Yang: Jiangxi Key Laboratory of Advanced Ceramic Materials, National Engineering Research Center for Domestic & Building Ceramics, School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi 333403, China
Xingan Jiang: Jiangxi Key Laboratory of Advanced Ceramic Materials, National Engineering Research Center for Domestic & Building Ceramics, School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi 333403, China
Xiaokun Huang: Jiangxi Key Laboratory of Advanced Ceramic Materials, National Engineering Research Center for Domestic & Building Ceramics, School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi 333403, China
Xiaoyi Gao: Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong 2500, Australia
Na Tu: Jiangxi Key Laboratory of Advanced Ceramic Materials, National Engineering Research Center for Domestic & Building Ceramics, School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi 333403, China
Kaizheng Shu: Jiangxi Key Laboratory of Advanced Ceramic Materials, National Engineering Research Center for Domestic & Building Ceramics, School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi 333403, China
Xiangping Jiang: Jiangxi Key Laboratory of Advanced Ceramic Materials, National Engineering Research Center for Domestic & Building Ceramics, School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi 333403, China
Shujun Zhang: Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong 2500, Australia
Haosu Luo: Artificial Crystal Research Center, Shanghai Institute of Ceramics, University of Chinese Academy of Sciences, Jiading, Shanghai 200050, China

DOI: https://doi.org/10.3390/cryst10060435
Journal volume & issue: Vol. 10, no. 6
p. 435

Abstract

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In this work, we report the ultrahigh electromechanical coupling performance of NBT-6BT-KNN lead-free single crystal at room temperature. The thickness mode electromechanical coupling coefficient (kt) and the 31 mode electromechanical coupling coefficient (k31) reach 69.0% and 45.7%, respectively, which are superior to the PZT-5H lead-based ceramics of kt~60% and k31~39%. In addition, the evolution of the crystal structure and domain morphology is revealed by Raman scattering spectra, a polarizing microscope and piezoelectric force microscopy characterization.

Published in Crystals

ISSN: 2073-4352 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Crystallography
Website: http://www.mdpi.com/journal/crystals/

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