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

被引:542
作者
Li, JF [1 ]
Wang, JL
Wuttig, M
Ramesh, R
Wang, N
Ruette, B
Pyatakov, AP
Zvezdin, AK
Viehland, D
机构
[1] Virginia Tech, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA
[2] Univ Maryland, Dept Mat & Nucl Engn, College Pk, MD 20742 USA
[3] Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
关键词
D O I
10.1063/1.1764944
中图分类号
O59 [应用物理学];
学科分类号
摘要
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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页码:5261 / 5263
页数:3
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