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Determination of polarization states in(K,Na)NbO3 lead-free piezoelectric crystal 被引量:4
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作者 Mao-Hua ZHANG Chengpeng HU +7 位作者 Zhen ZHOU Hao TIAN Hao-Cheng THONG Yi Xuan LIU Xing-Yu XU Xiao-Qing XI Jing-Feng LI Ke WANG 《Journal of Advanced Ceramics》 SCIE CSCD 2020年第2期204-209,共6页
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... 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. 展开更多
关键词 PIEZOELECTRICS LEAD-FREE (K0.40Na0.60)NbO3(KNN) switching spectroscopy piezoresponse force microscopy(SS-PFM) ferroelectric domain
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