采用质量三角形模型估算SrTiO_3-La_(0.3)Sr_(0.7)TiO_3-(La_(0.3)Sr_(0.7))_(0.93)TiO_3体系中固溶体电导率  

Predicting the electric conductivity of solid solutions in SrTiO_3-La_(0.3)Sr_(0.7)TiO_3-(La_(0.3)Sr_(0.7))_(0.93)TiO_3 system by a mass triangle model

作　　者：李雪[1,2] 赵海雷[1] 罗大为[1,3] 周国治[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]深圳光启高等理工研究院超材料电磁调制技术国家重点实验室,深圳518057 [3]深圳职业技术学院应用化学与生物技术学院,深圳518055

出　　处：《北京科技大学学报》2012年第12期1405-1409,共5页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金资助项目(20973021);北京市优秀博士学位论文指导教师基金资助项目(YB20091000802);深圳市科技局资助项目(JC201006020768A)

摘　　要：通过质量三角形模型计算了SrTiO3--La0.3Sr0.7TiO3--(La0.3Sr0.7)0.93TiO3三元体系中固溶体在100～900℃温度范围内的电导率,得到了等电导率图.对典型组分进行了实验验证,实验值和理论计算符合较好,说明质量三角形模型可以用于混合导体材料电导率的预报.The constant electric conductivity curves of solid solutions in the SrTiO3-La0.3Sr0.7TiO3-（La0.3Sr0.7）0.93TiO3 ternary system were obtained by estimating the electric conductivity of the solid solutions by a mass triangle model. Some typical compositions of the solid solutions were selected to verify the calculated results. The experimental values are consistent well with the predicted ones, demonstrating the feasibility of a mass triangle model in predicting the electric conductivity of mixed conductor.

关 键 词：陶瓷材料 钛酸锶 三元体系 固溶体 电导率 

分 类 号：TM911[电气工程—电力电子与电力传动]