Ferroelectric and Magnetic Properties of BiFeO3 Thin Films Deposited on SrTiO3 Substrate

被引：0
|
作者：
Lee, Eun Gu [1 ]
Kim, Sun Jae [2 ]
Lee, Jae Gab [3 ]
机构：
[1] Chosun Univ, Dept Adv Mat Engn, Gwangju 501759, South Korea
[2] Sejong Univ, Dept Adv Inst Nano Technol, Seoul 143747, South Korea
[3] Kookmin Univ, Sch Adv Mat Engn, Seoul 702, South Korea
来源：
JOURNAL OF THE KOREAN CERAMIC SOCIETY | 2008年 / 45卷 / 06期
关键词：
Ferroelectric; Ferromagnetic; Magnetoelectric effects;
D O I：
10.4191/kcers.2008.45.6.358
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
BiFeO3 films were hetero-epitaxially grown on SrTiO3 substrate with a various orientation by pulse laser deposition. BiFeO3 films grown on (111) SrTiO3 substrate have a rhombohedral structure, identical to that of single crystals. On the other hand, films grown on (110) or (001) SrTiO3 substrate are monoclinically distorted from the rhombohedral structure due to the epitaxial constraint. The easy axis of spontaneous polarization is close to [111] for the variously oriented films. Dramatically enhanced polarization and magnetization have been found for BiFeO3 thin films grown on SrTiO3 substrate comparing to that of BiFeO3 crystals. The results are explained in terms of an epitaxially-induced transition between cycloidal and homogeneous spin states, via magneto-electric interactions.
引用
收藏
页码：358 / 362
页数：5
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