尺寸效应对细晶粒BaTiO_3陶瓷电滞现象的影响  

The dimension effects on hysteresis loops of fine grain BaTiO_3 ceramics

作　　者：康爱国[1] 邓湘云[1] 王晓慧[1] 李龙土[1] 

机构地区：[1]清华大学材料科学与工程系新型陶瓷和精细工艺国家重点实验室,北京100084

出　　处：《功能材料》2005年第11期1712-1714,共3页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2001AA325010和2003AA32G030);国家科技部国家重点基础研究发展计划(973计划)资助项目(2002CB613301)

摘　　要：考虑到转向极化和反向畴的成核生长过程的综合影响,引入了一个反映两种过程影响程度的比例参数,对细晶粒BaTiO3陶瓷的电滞回线进行了理论分析,其结论与试验结果是极其一致的,这将有助于深入了解晶粒尺寸效应对BaTiO3陶瓷极化影响的机制。Taking into account the influences of reorientation and nucleation of reverse polarization, a fraction f was proposed and the hysteresis loops of fine grain BaTiO3 ceramics were studied theoretically. The results are according to that of experiments. It was expected that this study will be help to understand the mechanism of dimension effects on polarization of fine BaTiO3 ceramics.

关 键 词：尺寸效应 电滞回线 BATIO3陶瓷 

分 类 号：O487[理学—固体物理] TB34[理学—物理]