Triclinic phase in tilted (001) oriented BiFeO3 epitaxial thin films
نویسندگان
چکیده
منابع مشابه
Strain-induced polarization rotation in epitaxial (001) BiFeO3 thin films.
Direct measurement of the remanent polarization of high quality (001)-oriented epitaxial BiFeO3 thin films shows a strong strain dependence, even larger than conventional (001)-oriented PbTiO3 films. Thermodynamic analysis reveals that a strain-induced polarization rotation mechanism is responsible for the large change in the out-of-plane polarization of (001) BiFeO3 with biaxial strain while t...
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Ferroelectric domain structures of epitaxial BiFeO3 thin films on miscut 001 SrTiO3 substrates have been studied by transmission electron microscopy. BiFeO3 on 0.8° miscut substrates are composed of both 109° and 71° domains; in contrast, only 71° stripe domains are observed in BiFeO3 on 4° miscut 001 SrTiO3 substrates. The domain width in BiFeO3 on 4° miscut substrates increases as film thickn...
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We explore BiFeO3 under tensile strain using first-principles calculations. We find that the actual structures are more complex than what had been previously thought, and that there is a strong shear deformation type structural instability which modifies the properties. Specifically, we find that normal tensile strain leads to structural instabilities with a large induced shear deformation in (...
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2009
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.3110972