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

doi:10.1063/1.4927750

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 journal › Article › peer-review

25 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 language	English (US)
Article number	052903
Journal	Applied Physics Letters
Volume	107
Issue number	5
DOIs	https://doi.org/10.1063/1.4927750
State	Published - Aug 3 2015

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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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.",

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AU - Winchester, B.

AU - Balke, N.

AU - Cheng, X. X.

AU - Morozovska, A. N.

AU - Kalinin, S.

AU - Chen, L. Q.

PY - 2015/8/3

Y1 - 2015/8/3

N2 - 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.

AB - 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.

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

Abstract

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