Authors
Mao-Hua ZHANG, State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Chengpeng HU, Department of Physics, Harbin Institute of Technology, Harbin 150001, China
Zhen ZHOU, State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Hao TIAN, Department of Physics, Harbin Institute of Technology, Harbin 150001, China
Hao-Cheng THONG, State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Yi Xuan LIU, State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Xing-Yu XU, State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Xiao-Qing XI, State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Jing-Feng LI, State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Ke WANG, State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Keywords
piezoelectrics, lead-free, (K0.40Na0.60)NbO3 (KNN), switching spectroscopy piezoresponse force microscopy (SS-PFM), ferroelectric domain
Abstract
Polarization switching in lead-free (K0.40Na0.60)NbO3 (KNN) single crystals was studied by switching spectroscopy piezoresponse force microscopy (SS-PFM). Acquisition of multiple hysteresis loops on a closely spaced square grid enables polarization switching parameters to be mapped in real space. Piezoresponse amplitude and phase hysteresis loops show collective symmetric/asymmetric characteristics, affording information regarding the switching behavior of different domains. As such, the out-of-plane polarization states of the domains, including amplitudes and phases can be determined. Our results could contribute to a further understanding of the relationships between polarization switching and polarization vectors at the nanoscale, and provide a feasible method to correlate the polarization hysteresis loops in a domain under an electric field with the polarization vector states.
Publisher
Tsinghua University Press
Recommended Citation
Mao-Hua ZHANG, Chengpeng HU, Zhen ZHOU et al. Determination of polarization states in (K,Na)NbO3 lead-free piezoelectric crystal. Journal of Advanced Ceramics 2020, 9(2): 204-209.
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