Fabrication of submicron La2O3-coated BaTiO3 particles and fine-grained ceramics with temperature-stable dielectric properties

被引：41
|
作者：
Wang, Yan [1 ]
Cui, Bin [1 ]
Liu, Yu [1 ]
Zhao, Xiaotong [1 ]
Hu, Zhenyu [1 ]
Yan, Qiangqiang [1 ]
Wu, Tong [1 ]
Zhao, Lili [2 ]
Wang, Yaoyu [1 ]
机构：
[1] NW Univ Xian, Dept Chem, Shanxi Key Lab Physicoinorgan Chem, Key Lab Synthet & Nat Funct Mol Chem,Minist Educ, Xian 710069, Peoples R China
[2] NW Univ Xian, Sch Informat Sci & Technol, Xian 710127, Peoples R China
来源：
SCRIPTA MATERIALIA | 2014年 / 90-91卷
基金：
中国国家自然科学基金;
关键词：
Transmission electron microscopy (TEM); Core-shell structure; Dielectrics; Chemical coating method; CORE-SHELL STRUCTURE; BARIUM; YTTRIUM;
D O I：
10.1016/j.scriptamat.2014.07.014
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
La2O3-coated BaTiO3 core shell submicron particles are synthesized using chemical methods. The effects of the La2O3 coating characteristics, adjusted through pH control, on the microstructure and dielectric properties of the resulting composite BaTiO3 multilayer-capacitor ceramics are studied, and compared with bulk BaTiO3 and Ba0.97La0.02TiO3 ceramics. We obtained fine-grained ceramics with temperature-stable dielectric properties, a maximum permittivity of 2902 and a dielectric loss of less than 0.6% at room temperature. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：49 / 52
页数：4
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