| Autor: |
Zhang, Mao-Hua, Hu, Chengpeng, Zhou, Zhen, Tian, Hao, Thong, Hao-Cheng, Liu, Yi Xuan, Xu, Xing-Yu, Xi, Xiao-Qing, Li, Jing-Feng, Wang, Ke |
| Zdroj: |
Journal of Advanced Ceramics; April 2020, Vol. 9 Issue: 2 p204-209, 6p |
| Abstrakt: |
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. |
| Databáze: |
Supplemental Index |
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