Bilayered BiFe0.95Mn0.05O3/Bi0.90La0.10FeO3 Thin Films with Low Ferroelectric Coercivity and Large Remanent Polarization

被引:7
|
作者
Wu, Jiagang [1 ]
Wang, John [1 ]
机构
[1] Natl Univ Singapore, Fac Engn, Dept Mat Sci & Engn, Singapore 117574, Singapore
关键词
BIFEO3;
D O I
10.1111/j.1551-2916.2010.03661.x
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
Bilayered thin films consisting of (Bi0.90La0.10)FeO3 and Bi(Fe0.95Mn0.05)O-3, i.e., Bi(Fe0.95Mn0.05)O-3/(Bi0.90La0.10)FeO3, were deposited on SrRuO3 buffered SrTiO3(111) substrates by off-axis radio frequency magnetic sputtering, where (111)-oriented bilayered thin films were obtained. The bilayered Bi(Fe0.95Mn0.05)O-3/(Bi0.90La0.10)FeO3 thin film possesses a lower coercive field (2E(c)similar to 335.6 kV/cm) and a larger remanent polarization (2P(r)similar to 155.2 mu C/cm2) at room temperature, and a higher relative permittivity as compared with those of single-layer (Bi0.90La0.10)FeO3 and Bi(Fe0.95Mn0.05)O-3 thin films, together with an improvement of the magnetic properties (2M(s)similar to 31.2 emu/cm3). The bottom (Bi0.90La0.10)FeO3 nanolayer promotes the growth of the Bi(Fe0.95Mn0.05)O-3 layer, which are largely responsible for the multiferroic behavior observed.
引用
收藏
页码:2113 / 2116
页数:4
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