Dramatically enhanced polarization in (001), (101), and (111) BiFeO3 thin films due to epitiaxial-induced transitions

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Date
2004-06-01
Author
Li, Jiefang
Wang, Junling
Wuttig, Manfred
Ramesh, R.
Wang, Naigang
Ruette, Benjamin
Pyatakov, Alexander P.
Zvezdin, Anatoly Konstantinovich
Viehland, Dwight D.
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Abstract
Dramatically enhanced polarization has been found for (001), (101), and (111) films, relative to that of BiFeO3 crystals. The easy axis of spontaneous polarization lies close to (111), for the various oriented films. BiFeO3 films grown on (111) have a rhombohedral structure, identical to that of single crystals; whereas films grown on (101) or (001) are monoclinically distorted from the rhombohedral structure, due to the epitaxial constraint. (C) 2004 American Institute of Physics.
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http://hdl.handle.net/10919/25249
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