Temperature and frequency dependence of the coercive field of 0.71PbMb1/3Nb2/3O3-0.29PbTiO3 relaxor-based ferroelectric single crystal

Yang Zhang, Zhaojiang Chen, Wenwu Cao, Zhongwu Zhang

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

The hysteresis loop of ferroelectric materials becomes narrower with the increase in temperature due to energy barrier reduction, while the coercive field level increases with frequency due to the inertia of polarization reversal. These two competing effects determine the limiting operation field of medical imaging transducers at high frequencies. We have measured the coercive field of the 0.71PbMb1/3Nb2/3O3-0.29PbTiO3 single crystal as functions of both temperature and frequency. It was found that the coercive field linearly decreases with temperature at all frequencies. Related theoretical analysis was also performed to understand the physics behind the observed phenomena.

Original languageEnglish (US)
Article number172902
JournalApplied Physics Letters
Volume111
Issue number17
DOIs
StatePublished - Oct 23 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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