Antiferroelectricity and ferroelectricity in epitaxially strained PbZrO3 from first principles

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Abstract

Density-functional calculations are performed to study the effect of epitaxial strain on PbZrO3. We find a remarkably small energy difference between the epitaxially strained polar R3c and nonpolar Pbam structures over the full range of experimentally accessible epitaxial strains -3%≤η≤4%. While ferroelectricity is favored for all compressive strains, for tensile strains the small energy difference between the nonpolar ground state and the alternative polar phase yields a robust antiferroelectric ground state. The coexistence of ferroelectricity and antiferroelectricity observed in thin films is attributed to a combination of strain and depolarization field effects.

Original languageEnglish
Article number180102
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume88
Issue number18
DOIs
Publication statusPublished - 25 Nov 2013

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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