Strain-driven phase transitions and associated dielectric/piezoelectric anomalies in BiFeO3 thin films

C. W. Huang; Ying-hao Chu; Z. H. Chen; Junling Wang; T. Sritharan; Q. He; R. Ramesh; Lang Chen

doi:10.1063/1.3499658

Strain-driven phase transitions and associated dielectric/piezoelectric anomalies in BiFeO₃ thin films

C. W. Huang, Ying-hao Chu, Z. H. Chen, Junling Wang, T. Sritharan, Q. He, R. Ramesh, Lang Chen

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

Strain-driven phase transitions and related intrinsic polarization, dielectric, and piezoelectric properties for single-domain films were studied for BiFeO₃ using phenomenological Landau-Devonshire theory. A stable and mixed structure between tetragonal and rhombohedral-like (monoclinic) phases is predicted at a compressive misfit strain of u_m =-0.0382 without an energy barrier. For a tensile misfit strain of u_m =0.0272, another phase transition between the monoclinic and orthorhombic phases was predicted with sharply high dielectric and piezoelectric responses.

Original language	English
Article number	152901
Pages (from-to)	1049-1053
Number of pages	3
Journal	Applied Physics Letters
Volume	97
Issue number	15
DOIs	https://doi.org/10.1063/1.3499658 https://doi.org/10.1109/18.256513
State	Published - 11 Oct 2010

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abstract = "Strain-driven phase transitions and related intrinsic polarization, dielectric, and piezoelectric properties for single-domain films were studied for BiFeO3 using phenomenological Landau-Devonshire theory. A stable and mixed structure between tetragonal and rhombohedral-like (monoclinic) phases is predicted at a compressive misfit strain of um =-0.0382 without an energy barrier. For a tensile misfit strain of um =0.0272, another phase transition between the monoclinic and orthorhombic phases was predicted with sharply high dielectric and piezoelectric responses.",

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AU - Huang, C. W.

AU - Chu, Ying-hao

AU - Chen, Z. H.

AU - Wang, Junling

AU - Sritharan, T.

AU - He, Q.

AU - Ramesh, R.

AU - Chen, Lang

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AB - Strain-driven phase transitions and related intrinsic polarization, dielectric, and piezoelectric properties for single-domain films were studied for BiFeO3 using phenomenological Landau-Devonshire theory. A stable and mixed structure between tetragonal and rhombohedral-like (monoclinic) phases is predicted at a compressive misfit strain of um =-0.0382 without an energy barrier. For a tensile misfit strain of um =0.0272, another phase transition between the monoclinic and orthorhombic phases was predicted with sharply high dielectric and piezoelectric responses.

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Strain-driven phase transitions and associated dielectric/piezoelectric anomalies in BiFeO3 thin films

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Strain-driven phase transitions and associated dielectric/piezoelectric anomalies in BiFeO₃ thin films