镓酸镧基固体电解质离子导电性与价电子结构的关系  

Relationship between ionic conductivity and valence electron structure of LaGaO_3 based 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,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2006年第6期646-650,共5页Journal of Hefei University of Technology：Natural Science

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

摘　　要：文章应用固体与分子经验电子理论计算了镓酸镧基固体电解质材料的价电子结构,计算结果表明,1/(nAnB)随x及y增加而增加。实验结果表明,当x、y小于20%时,电导率σ随x、y增加而增加,并随1/(nAnB)增加而电导率σ增加,通过价电子结构的计算,可预测不同成分的LSGM的电导率。The valence electron structures of Sr- and Mg-doped LaGaO3 ceramics with different compositions were calculated by using the empirical electron theory（EET） of solids and molecules. The results of calculation show that 1/（nAnB） increases with increasing of x and y. The results of experiment show that conductivity increases with increasing of x and y when x andy are less than 20%,and that conductivity increases with increasing of 1/（nAnB） when x and y are less than 20%. Therefore the conductivity of LSGM with different x or y can he forecast by calculating valence electron structures of LSGM.

关 键 词：价电子结构 SR Mg掺杂的镓酸镧 离子导电性 

分 类 号：TG148[一般工业技术—材料科学与工程]