NdFeO3 is one of the oxide material can be detected various gases, like S/O2, CO, H2S,
etc. In this research, Nd1.2FeO3 as oxide material have been synthesized by solid-state reaction
with a variation of annealing time. Characterized by XRD shows that the samples have form
crystal perovskite structure with dominant phase and peak intensity correspond to hkl (121).
FWHM value for the dominant peak was 0.22°. The crystallite of the samples was determined
using Debye Scherer formula were 393.08, 393.10, and 393.10 nm, respectively. While the SEM
characterized showed the morphology of the samples was homogenous with grain size estimates of
0.2μm. These results indicate the variation of annealing time 1, 2, and 3 hours did not significantly
affect the crystallinity and morphology of Nd1.2FeO3 oxide material
