Abstract
Nano crystalline samples of LaFeO3 (LFO) and La0.9Sm0.1Fe0.9Ni0.1O3 have been successfully synthesized through the sol-gel process. X-ray diffraction patterns confirm the orthorhombic phase of standard LaFeO3. FTIR spectroscopy shows the existence of two active vibrational modes around 410 and 550 cm−1. Specific heat capacity (Cp) displays exothermic and endothermic peaks, related to evaporation of water vapor and phase transitions respectively. The Cp is seen to rise in the doped sample, which ensures its increased thermal stability. Magnetic studies reveal the increase in magnetization and the transition from antiferromagnetic to ferromagnetic state in doped sample. Magnetoelectric study confirmed the multiferroic nature of LFO.
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