Kinetic properties and structural analysis of LaCrO₃ nanoparticles

LaCrO₃ perovskite nanopowders were successfully prepared via a sol-gel method using stoichiometric proportion of materials containing lanthanum and chromium in stearic acid complexing agent. Structural analysis of LaCrO₃ indicated an octahedral framework in its XRD pattern bearing crystallite size in the range of 28 nm. The particle sizes were confirmed by morphological scanning of the sample. The optical properties of LaCrO₃ nanopowders clearly indicated an interesting optical activity of LaCrO₃ in the UV and visible ranges. The degradation activation energy (E_d) was calculated from the output of a moderate thermal programming profile at about 207.97 kJ·mol^-1 using Kissinger equation. Capacity, impedance and AC resistance of the perovskites was obtained at 2.970 nF, 2.522 MΩ and 16.19 MΩ, respectively.