采用柠檬酸盐法制备SnO2(0.9)-Fe2O3(0.1)粉体材料.XRD结构分析表明,在750℃焙烧温度下制得的粉体材料中铁原子大部分进入SnO2晶格中,以SnO2(0.9)-Fe2O3(0.1)固溶体状态存在.采用750℃焙烧温度下制得的SnO2(0.9)-Fe2O3(0.1)固溶体为基体材料,制作旁热式气敏元件并考察其气敏特性.结果表明此类元件对乙醇、一氧化碳等还原性气体具有较高的灵敏度.同时元件长期稳定性良好,100天内元件阻值及灵敏度变化很小.
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