用固相反应法合成了钙钛矿型复合氧化物Nd1-xSrxFeO3-δ(x=0.2,0.4,0.6,0.8)样品,对各样品作了结构分析,对x=0.4样品作了热重分析,测试了各样品在不同温度下的直流电导率,给出了活化能,分析了材料的电输运机理。结果表明,所有样品都呈类钙钛矿结构,在低温段,载流子具有p型小极化子导电特征。对于这种电输运特性,结合材料的失氧规律,给出了合理的解释。 The samples of perovskite-type composite Nd1-xSrxFeO3-δ (x = 0.2,0.4,0.6,0.8) were synthesized by the solid-state reaction method. The structure of each sample was analyzed. The thermal gravimetric analysis , The DC conductivity of each sample at different temperatures was tested, the activation energy was given and the mechanism of electrical transport was analyzed. The results show that all the samples have a perovskite-like structure. At low temperature, carriers have p-type small polaron conductivity. For this kind of electrical transport characteristics, combined with the law of oxygen loss of materials, gives a reasonable explanation.