Browsing by Author "Chen, Z. H."

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Strain-driven phase transitions and associated dielectric/piezoelectric anomalies in BiFeO(3) thin films
(2010-10-11)
Huang, C. W.
;
Chu, Y. H.
;
Chen, Z. H.
;
Wang, Junling
;
Sritharan, T.
Strain-driven phase transitions and related intrinsic polarization, dielectric, and piezoelectric properties for single-domain films were studied for BiFeO(3) 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]
Strain-driven phase transitions and associated dielectric/piezoelectric anomalies in BiFeO3 thin films
(2010-10-11)
Huang, C. W.
;
Chu, Y. H.
;
Chen, Z. H.
;
Wang, Junling
;
Sritharan, T.
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]