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

Zhaojiang Chen, Yang Zhang, Shiyang Li, Xuan Ming Lu, Wenwu Cao

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Abstract

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.

Original languageEnglish (US)
Article number202904
JournalApplied Physics Letters
Volume110
Issue number20
DOIs
StatePublished - May 15 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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