Sr,Mg掺杂的LaGaO_3的离子导电性与价电子结构判据  

Relationship Between the Ionic Conductivity and Valence Electron Structure of Sr-and Mg-Doped LaGaO_3 Ceramics

作　　者：石敏[1] 许育东[1] 刘宁[1] 汪灿[1] 袁玉鹏[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,合肥230009

出　　处：《硅酸盐通报》2005年第6期32-36,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家留学回国人员基金项目(教外司留[2003]14号);合肥工业大学科学研究发展基金项目(050302F).

摘　　要：应用固体与分子经验电子理论(EET理论)计算了Sr,Mg掺杂的镓酸镧固体电解质材料的价电子结构,探讨了价电子结构与离子电导率间的关系。提出了离子导电性的价电子结构判据关系式,得到了与实验规律一致的结果。The valence electron structures of different compositions of Sr - and Mg - doped LaGa03 ceramics were calculated by using the empirical electron theory of solids and molecules. The relationship between the valence electron structures and the ionic conductivities of LSGM was also discussed. Based on the above relation, a criterion for the ionic conductivity was proposed and the results were in agreement with the results of experiment.

关 键 词：价电子结构 SR Mg掺杂的镓酸镧 离子导电性 

分 类 号：TM911.4[电气工程—电力电子与电力传动] TG111.1[金属学及工艺—物理冶金]