Abstract
Nano-sized LaFeO3 powders were prepared first time by glycine–nitrate combustion process at different temperatures without using water or any other solvent for the preparation of precursor solution and thus avoids impurities caused by water completely. The structures of phases, calcined at different temperatures, were refined in the space group Pbnm with orthorhombic setting and a good agreement was obtained between the observed and calculated XRD patterns. The crystallite size and specific surface area during the decomposition process were monitored up to 1200 °C. A pure nano-sized LaFeO3 powder with high specific surface area of 18.30 m2/g and a crystallite size of 49.35 nm was obtained after calcination at 400 °C, while TEM investigations reveal a porous powder with particles in the range of 46–69 nm. Calcinations to 1200 °C result in crystallite sizes up to 82.35 nm. Magnetic measurements reveal that LaFeO3 powders are anti-ferromagnetic. Both magnetic susceptibility and effective magnetic moments of the samples increase with decreasing particle size because of an increasing fraction of atoms lie at or near the surface.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call