Structural, Magnetic and Impedance Spectroscopic Analysis of LaFeO3 Nano-particles

Abstract

Physical properties are known to be drastically varied with crystallite size and in a multifunctional material this size reduction is seem to be interesting. The average particle size found to be in the order of 45nm. A distorted orthorhombic structure with Pbnm space group is possessed by this nanoparticle. From the bifurcation of ZFC and FC in low field, behavior of inverse susceptibility and the small hysteresis loop favors the material to be in a weak FM state well below the Neel temperature. The electrical behavior and the conduction mechanism above room temperature have been studied by cole-cole plot of the Impedance spectra. The high frequency depressed semi circles represent the grain conduction while the intermediate frequency semi circles appear may be due to grain boundary effect.