Frequency Dependence of Coercive Fields of [001]- and [011]-Poled Rhombohedral Pb(In1/2Nb1/2)O₃-Pb(Mg1/3Nb2/3)O₃-PbTiO₃ Single Crystals

Liao Qiao; Song Xia; Xiangyu Gao; Yangbin Liu; Kexin Song; Haisheng Guo; Zhuo Xu; Fei Li

doi:10.1109/TUFFC.2020.3023536

Frequency Dependence of Coercive Fields of [001]- and [011]-Poled Rhombohedral Pb(In_1/2Nb_1/2)O₃-Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ Single Crystals

IEEE Trans Ultrason Ferroelectr Freq Control. 2021 Apr;68(4):1430-1436. doi: 10.1109/TUFFC.2020.3023536. Epub 2021 Mar 26.

Authors

Liao Qiao, Song Xia, Xiangyu Gao, Yangbin Liu, Kexin Song, Haisheng Guo, Zhuo Xu, Fei Li

PMID: 32915735
DOI: 10.1109/TUFFC.2020.3023536

Abstract

Relaxor-PbTiO₃ (PT-based) ferroelectric single crystals are important for many piezoelectric applications because of their outstanding performances. In order to expand their usage and avoid the failure during application, frequency dependence of coercive fields E_C for [001]- and [011]-poled rhombohedral Pb(In_1/2Nb_1/2)O₃-Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ (PIN-PMN-PT) single crystals was investigated from the frequency of 1 Hz to 300 kHz by using hysteresis loop measurement (frequency: from 1 Hz to 2 kHz) and a critical value method (frequency: from 5 to 300 kHz). The results showed that the coercive field E_C , remnant polarization P_r , and saturation polarization P_s strongly depended on the crystal orientation and frequency. Compared with the [001]-poled crystals, the [011]-poled PIN-PMN-PT single crystals possessed higher E_C , P_r , and P_s at the same testing frequencies. With increasing frequency from 1 Hz to 300 kHz, the coercive fields E_C of the [001]- and [011]-poled PIN-PMN-PT single crystals increased from 4.0 and 4.8 kV/cm to 11.5 and 14.9 kV/cm, respectively. Moreover, the frequency dependence of the coercive fields was found to be consistent with the growth kinetics model, where the coercive fields E_C were proportional to f^β . This work benefits to the design of piezoelectric devices based on PIN-PMN-PT single crystals operated at high frequencies and high driving fields.