Journal
APPLIED PHYSICS LETTERS
Volume 97, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3499658
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Funding
- Nanyang Technological University under MOE [RG 21/07, ARC 16/08]
- National Science Council, R.O.C. [NSC-98-2119-M-009-016]
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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. (c) 2010 American Institute of Physics. [doi:10.1063/1.3499658]
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