Effect of misfit strain on ferroelectric domain formation at the morphotropic phase boundary

Zhen Liu, Bin Yang, Wenwu Cao, Turab Lookman

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

In the morphotropic phase boundary region where tetragonal and rhombohedral phases coexist in the ferroelectric solid solution PbZr1-xTixO3(PZT), large strains can be induced at the interface due to the lattice misfit of the two structures. We show that for bulk PZT the misfit strains between tetragonal and rhombohedral phases can lead to an adaptive monoclinic structure in the morphotropic phase boundary (MPB) region, similar to the effects of misfit strains between a crystal and substrate in epitaxial ferroelectric thin films. We use Landau theory to sixth order in polarization to provide insight into factors controlling the occurrence of the monoclinic phase in the MPB region.

Original languageEnglish (US)
Article number214117
JournalPhysical Review B
Volume94
Issue number21
DOIs
StatePublished - Dec 30 2016

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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