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BaBiO3 (perovskite) polycrystalline semiconducting material wa chemical method. Structure of the sample wa (XRD). Grain, Grain boundary topography and chemical composition of the studied by using Scanning Electron Microscope (SEM) and Energy Dispersive X Spectrometry (EDS). Fourier transform-infrared spectroscopy (FT study of band structure. The result of XRD characterization wa BaBiO3 is monoclinic perovskite and crystalline size is 85 BaBiO3 showed the grain size of 85 nm. The FT the BaBiO3 has absorbent peak at 1420 cm