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

Publication Type

Journal Article

Authors

Huang, C.W, Y.H Chu, Z.H Chen, J Wang, T Sritharan, Q He, Ramamoorthy Ramesh, L Chen

DOI

10.1063/1.3499658

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. © 2010 American Institute of Physics.

Journal

Applied Physics Letters

Volume

Year of Publication

2010

ISSN

00036951

Notes

cited By 28

Research Areas

Ramesh Lab