Multiferroic properties of Bi3.15Nd0.85Ti3O12-CoFe2O4 bilayer films derived by a sol-gel processing

被引:20
作者
Yang, Bin [1 ]
Li, Zheng [1 ]
Gao, Ya [1 ]
Lin, Yuanhua [1 ]
Nan, Ce-Wen [1 ]
机构
[1] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
关键词
Thin films; Composite materials; Sol-gel processes; Ferroelectrics; Magnetic films and multilayers;
D O I
10.1016/j.jallcom.2011.01.124
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Multiferroic Bi3.15Nd0.85Ti3O12 (BNT)-CoFe2O4 (CFO) bilayer films with different preferential orientations and thickness fractions for the BNT layer were prepared on Pt/Ti/SiO2/Si substrate by a sol-gel processing. The experimental results showed that the bilayer films with preferentially a-axis oriented and thicker BNT layer have better ferroelectric properties. The magnetoelectric coupling response is weak when the degree of a-axis orientation of the BNT layer is low or the leakage current is high, while it is mainly controlled by the thickness fraction in other cases. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:4608 / 4612
页数:5
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