Annealing heating rate dependence of microstructure and multiferroic properties in Bi4Ti2.9Fe0.1O12/CoFe2O4 layered magnetoelectric composite films prepared by chemical solution deposition method

被引:5
作者
Duan, Zongfan [1 ,3 ]
Fu, Xing [1 ]
Mei, Yun [1 ]
Hu, Zhudong [2 ]
Mao, Jiatong [1 ]
Ding, Kai [1 ]
You, Caiyin [1 ]
Wang, Xianhui [1 ]
Zhao, Gaoyang [1 ]
机构
[1] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China
[2] Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China
[3] Mat Corros & Protect Key Lab Sichuan Prov, Zigong 643000, Peoples R China
基金
中国国家自然科学基金;
关键词
Magnetoelectric composite films; Orientation; Multiferroic; Bi4Ti2.9Fe0.1O12; CoFe2O4; ANION-DEFICIENT MANGANITE; COFE2O4; THIN-FILMS; MAGNETIC-PROPERTIES; LEAKAGE CURRENT; ELECTRICAL-PROPERTIES; DIELECTRIC-PROPERTIES; BEHAVIOR; CRYSTAL; GROWTH; MORPHOLOGY;
D O I
10.1016/j.ceramint.2020.03.115
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
Lead-free magnetoelectric composite films of CoFe2O4 (CFO) and Bi4Ti2.9Fe0.1O12 (BTF) were prepared on the LaNiO3-coated Si substrate by chemical solution deposition. Though the CFO layer randomly grows on the LaNiO3 layer, the oriented growth of the BTF layer can be regulated by rapid annealing treatment. The results indicated that the annealing heating rate significantly affects the c-axis orientation of the BTF layer, thereby resulting in obvious changes in microstructure, leakage behavior, dielectricity and ferroelectricity of the BTF/CFO films. The BTF/CFO film prepared at the heating rate of 40 degrees C/s presents the most compact structure, minimum leakage current, maximum dielectric constant and the highest residual polarization of 28.8 mu C/cm(2). Moreover, the excellent magnetoelectric coupling performance along with the highest magnetoelectric coupling voltage coefficient alpha(E) of 20.1 V/cm.Oe can be achieved in these conditions.
引用
收藏
页码:15654 / 15664
页数:11
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