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中文摘要：
利用微波化学法合成Sr掺杂LaFeO3粉体,并对其晶体结构和形貌进行了表征,结果表明Sr掺杂LaFeO3粉体为单一正交钙钛矿结构,没有杂相峰出现,且La0.91Sr0.09FeO3颗粒呈椭球状,颗粒粒径为65nm左右,颗粒分散性较好。对材料的气敏性能研究结果表明,La0.91Sr0.09FeO3元件在工作温度为180℃时对1.0×10^-5甲苯气体的灵敏度为9.5,且具有良好的选择性,响应和恢复时间分别是40和50s。
英文摘要：
Sr-doped LaFeO3 powder was prepared by the method of microwave chemical synthesis. The crystal structure and morphologies of Sr-LaFeO3 were characterized. The results show that the La0.91Sr0.09FeO3 was pure perovskite structure, the dispersive of La0.91Sr0.09FeO3 particle is uniform and the particle size is about 65nm. The sensitivity and selectivity of La0.91Sr0.09FeO3 for 1.0×10^-5 toluene are good, and the response-recovery times are about 40 and 50s, respectively.
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