Nanocrystalline gas sensitive material based on Perovskite type La_0.8Ca_0.1Pb_0.1FeO₃ (LCPFO) sample has been prepared by the sol-gel method with the citric acid route. The gas sensitivities under different temperatures of the (LCPFO) compound have been investigated toward the two NH₃ and CO reducing gases. The synthesized compound has been analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS) and atomic force microscopy (AFM). It was found that the compound exhibits an orthorhombic symmetry with the Pnma space group. The effect of the experiment environment (under vacuum and air) on the conductance and activation energy E_a of the LCPFO compound has been evaluated. The E_a values have been found to be in the range of 0.43 eV < E_a < 0.53 eV and to be located between 0.42 and 0.62 eV under vacuum and air, respectively. Furthermore, the lowest detectable concentrations (10 and 40 ppm) of NH₃ and CO, respectively, have been achieved.

通过溶胶-凝胶法和柠檬酸法制备了基于钙钛矿型La _0.8 Ca _0.1 Pb _0.1 FeO ₃ （LCPFO）的纳米晶气敏材料。已经研究了（LCPFO）化合物在不同温度下对两种NH ₃和CO还原气体的气体敏感性。合成的化合物已通过X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM），能量色散光谱（EDS）和原子力显微镜（AFM）进行了分析。已发现该化合物与Pnma呈正交对称空间群。已经评估了实验环境（在真空和空气下）对LCPFO化合物的电导和活化能E _a的影响。所述Ë_一个值已被发现是在0.43的范围内 电子伏特 <  Ë_一个 <0.53 电子伏特和分别为位于真空和空气下0.42和EV之间0.62。此外，已经实现了最低的可检测浓度的NH ₃和CO （10 ppm和40  ppm）。