Publication

Abstract : LaCrO3 perovskite oxide was synthesized through the solution combustion method. The sample was characterized using spectral techniques such as XRD, FTIR, DRS UV–Visible, SEM and XPS. The XRD pattern reveals LaCrO3 structure with orthorhombic primitive lattices in the space group Pbnm (62) with an average crystallite size of 31 nm. The agglomeration among crystallites with irregular morphological shapes was evidenced using SEM images. La–Cr vibrations, Cr–O stretching vibrations, and O–Cr–O bending vibrations in the perovskite structure were observed from the FTIR spectrum. The Tauc’ plot employing the Kubelka-Munk function obtained from UV–Visible diffused reflectance data provided the optical band gap equal to 3.64 eV. The valence states of La and Cr in the prepared LaCrO3 perovskite oxide sample were appropriately identified using the binding energies obtained from deconvoluted XPS spectra.