Magnetic properties of PrCr_1−xFe_xO₃Perovskite

Abstract

PrCr _1-x Fe _x O ₃ (PCFO) samples were prepared by citric acid route. The samples were characterized by XRD and SEM. The sample exhibits a single phase orthorhombic structure with Pbnm space group. The Temperature dependent and field dependent magnetic measurements are measured in the range of 5K-400K at 100 Oe field and isothermal magnetization curves were recorded in the field range +5T to -5T at 5K temperature. The substitution of Fe ³⁺ in Cr ³⁺ site increases the Cr-O-Fe ferromagnetic superexchange interaction and thus increase in magnetic moments, with maximum at x=0.8. The frustration of co-existence of antiferromagnetism and ferromagnetism leads to decrease of magnetic ordering transition temperature from 240K (x=0) to 98K (x=0.8).