Frequency dependence of the coercive field of 0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 single crystal from 0.01 Hz to 5 MHz

The frequency dependence of the coercive field Ec in [001]c poled 0.71Pb(Mg1/3Nb2/3)O3–0.29PbTiO3 single crystals was investigated as a function of frequency f from 0.01 Hz to 5 MHz. Ec was found to be proportional to f β as predicted by the Ishibashi and Orihara model, but our results showed two fr...

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Veröffentlicht in:	Applied physics letters 2017-05, Vol.110 (20), p.202904-202904
Hauptverfasser:	Chen, Zhaojiang, Zhang, Yang, Li, Shiyang, Lu, Xuan-Ming, Cao, Wenwu
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied physics Coercivity Dependence Dielectrics, Ferroelectrics, and Multiferroics Nucleation Single crystals Switching
Online-Zugang:	Volltext
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Zusammenfassung:	The frequency dependence of the coercive field Ec in [001]c poled 0.71Pb(Mg1/3Nb2/3)O3–0.29PbTiO3 single crystals was investigated as a function of frequency f from 0.01 Hz to 5 MHz. Ec was found to be proportional to f β as predicted by the Ishibashi and Orihara model, but our results showed two frequency regimes separated at around 1.0 MHz with different β values. This change of switching kinetics may be due to the presence of slower relaxation times for non–180° domain switching and heterogeneous nucleation of polar nanoregions, whose contribution to polarization reversal is frozen out beyond 1.0 MHz, leading to a larger β.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.4983712