Effect of grain orientation and grain size on ferroelectric domain switching and evolution: Phase field simulations

S. Choudhury, Y. L. Li, C. Krill, L. Q. Chen

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92 Scopus citations

Abstract

Phase field simulations were conducted in order to understand the effect of grain orientation, grain boundary and grain size on ferroelectric domain switching, stress distribution and evolution behavior under an applied electric field. Tetragonal ferroelectric domains were considered. Hysteresis loops were obtained for a single crystal, a bi-crystal and a polycrystal and the differences in their coercive fields were examined. It was found that the magnitude of the coercive field was closely related to the domain structures at the maximum electric field. Nucleation of new domains at a grain boundary led to local high stress. The effect of a reduced ferroelectric transition temperature at the grain boundary on the polarization distribution, domain structure and switching was studied.

Original languageEnglish (US)
Pages (from-to)1415-1426
Number of pages12
JournalActa Materialia
Volume55
Issue number4
DOIs
StatePublished - Feb 2007

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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