@article{33521, keywords = {Phase transitions, Piezoelectricity, Piezoelectric response, Piezoelectric property, Landau-Devonshire theory, Misfit strains, Mixed structure, Orthorhombic phasis, Single domains}, author = {C.W Huang and Y.H Chu and Z.H Chen and J Wang and T Sritharan and Q He and Ramamoorthy Ramesh and L Chen}, title = {Strain-driven phase transitions and associated dielectric/piezoelectric anomalies in BiFeO3 thin films}, 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.}, year = {2010}, journal = {Applied Physics Letters}, volume = {97}, number = {15}, issn = {00036951}, doi = {10.1063/1.3499658}, note = {cited By 28}, language = {eng}, }