Dimension effects on the dielectric properties of fine BaTiO_3 ceramics  

作　　者：侯志文 康爱国 马维清 赵晓龙 

机构地区：[1]College of Physics and Optoelectronics, Taiyuan University of Technology [2]Yangquan Power Supply Branch

出　　处：《Chinese Physics B》2014年第11期532-535,共4页中国物理B（英文版）

基　　金：supported by the Natural Science Foundation of Shanxi Province,China(Grant No.2012011028-2)

摘　　要：It is found that the core-shell structured grains are easy to produce for fine grain doped BaTiO3 ceramics in the sintering process. We study the influence of the core-shell structure on the Curie-Weiss temperature and dielectric properties of BaTiO3 ceramics by using effective medium approximation （EMA）. Considering the second approximation, the dielectric properties of fine grain doped BaTiO3 ceramics are consistent with experimental data.It is found that the core-shell structured grains are easy to produce for fine grain doped BaTiO3 ceramics in the sintering process. We study the influence of the core-shell structure on the Curie-Weiss temperature and dielectric properties of BaTiO3 ceramics by using effective medium approximation （EMA）. Considering the second approximation, the dielectric properties of fine grain doped BaTiO3 ceramics are consistent with experimental data.

关 键 词：core-shell structure Curie-Weiss temperature BaTi03 ceramics second approximation 

分 类 号：TQ174.1[化学工程—陶瓷工业]