Direct Observation of Ferrielectricity at Ferroelastic Domain Boundaries in CaTiO3 by Electron Microscopy

Research output: Contribution to journalArticle

Authors

  • Sandra Van Aert
  • Stuart Turner
  • Rémi Delville
  • Dominique Schryvers
  • Gustaaf Van Tendeloo
  • Ekhard Salje

Institutes & Expert groups

Documents & links

DOI

Abstract

High-resolution aberration-corrected transmission electron microscopy aided by statistical parameter estimation theory is used to quantify localized displacements at a (110) twin boundary in orthorhombic CaTiO3. The displacements are 3–6 pm for the Ti atoms and confined to a thin layer. This is the first direct observation of the generation of ferroelectricity by interfaces inside this material which opens the door for domain boundary engineering.

Details

Original languageEnglish
Pages (from-to)523-527
JournalAdvanced materials
Volume24
Issue number4
DOIs
Publication statusPublished - 24 Jan 2012

Keywords

  • ferroelastic domain boudaries, ferrielectricity, CaTiO3, quantitative aberration-corrected transmission electron microscopy, atomic displacements

ID: 118045