標題: Strain-driven phase transitions and associated dielectric/piezoelectric anomalies in BiFeO3 thin films
作者: Huang, C. W.
Chu, Y. H.
Chen, Z. H.
Wang, Junling
Sritharan, T.
He, Q.
Ramesh, R.
Chen, Lang
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 11-Oct-2010
摘要: 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]
URI: http://dx.doi.org/10.1063/1.3499658
http://hdl.handle.net/11536/150092
ISSN: 0003-6951
DOI: 10.1063/1.3499658
期刊: APPLIED PHYSICS LETTERS
Volume: 97
Appears in Collections:Articles