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Low symmetry phase in (001) BiFeO3 epitaxial constrained thin films
Wang, J. L.
Viehland, Dwight D.
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The lattice of (001)-oriented BiFeO3 epitaxial thin film has been identified by synchrotron x-ray diffraction. By choosing proper scattering zones containing the fixed (001) reflection, we have shown that low-symmetry phases similar to a M-A phase exist in the thin film at room temperature. These results demonstrate a change in phase stability from rhombohedral in bulk single crystals, to a modified monoclinic structure in epitaxial thin films. 2005 American Institute of Physics.