Sr掺杂量对La_(1-x)Sr_xMnO_(3-δ)离子导电性能的影响

The Influence of Sr-Dopant on Ionic Conducting Properties of La_(1-x)Sr_xMnO_(3-δ)

本文从La1 -xSrxMnO3-δ材料的缺陷结构出发 ,探讨了材料在高温条件下离子 (氧离子 )导电的形成机制。分析了Sr掺杂量对氧离子导电性的影响 ,发现当Sr掺杂量x =0 .5时 ,La1 -xSrxMnO3-δ材料的离子电导率达到最大 ,因为在这一掺杂浓度时 ,材料中形成了最佳的氧空 (氧离子 )传输通道。

The structure of La 1- x Sr x MnO 3- δ and its ionic conducting mechanism are investigated at high temperature.At x=0.5,the ionic conductivity is the highest in oxygen deficient region.The oxygen ionic vacancy is the pathway of the oxygen ion,the pathway can link up for x=0.5.