Polymeric Sol-gel Method to Preparation LaNi0.6Fe0.4O3 and LaNiO3 Perovskite Nanostructures

LaNi0.6Fe0.4O3 and LaNiO3 perovskite nano-structures successfully prepared by polymeric sol-gel method using nitrate salts as precursors. The thermal analysis of prepared nano-powders was detected by means of thermogravimetric-differential thermal analysis (DTA-TG). X-ray diffraction (XRD) technique were used to recognize the obtained products and phases after thermal treatments. Microstructure properties were characterized by scanning electron microscope (SEM). p type and ntype semi conduction of samples were recognized by using Four Point Probe standard method. Results show the decomposition of precursor to 750 °C and formation of pure perovskite structures with general formula (ABO3). Also, the existence of nickel in the structure has been inhibited the crystallites growth. Particle size was increased with substitution of iron. Detected structure for LaNi0.6Fe0.4 3 rhombohedral and its semiconduction is p-type, which is same as LaNiO3 structure.