Electroelastic fields in artificially created vortex cores in epitaxial BiFeO3 thin films

B. Winchester, N. Balke, X. X. Cheng, A. N. Morozovska, S. Kalinin, L. Q. Chen

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

We employ phase-field modeling to explore the elastic properties of artificially created 1-D domain walls in (001)p-oriented BiFeO3 thin films, composed of a junction of the four polarization variants, all with the same out-of-plane polarization. It was found that these junctions exhibit peculiarly high electroelastic fields induced by the neighboring ferroelastic/ferroelectric domains. The vortex core exhibits a volume expansion, while the anti-vortex core is more compressive. Possible ways to control the electroelastic field, such as varying material constant and applying transverse electric field, are also discussed.

Original languageEnglish (US)
Article number052903
JournalApplied Physics Letters
Volume107
Issue number5
DOIs
StatePublished - Aug 3 2015

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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