Abstract:
Pure cubic spinel, nano sized Mn sub(0.6)Zn sub(0.4)Nd sub(x)Fe sub(2-x)O sub(4) with x = 0.0, 0.04, 0.05 and 0.06 have been synthesized using combustion method. It was observed that Nd doping had strong effect on structural as well as Magnetic properties of the material. Lattice constant was found to increase with increase in Nd3+ concentration, due to larger ionic radii and atomic weight of neodymium as compared to Fe sup(3+). Nd sup(+3) substitution at B site gave rise to the strain in the system which results in reduction of crystallite size in addition to grain boundary effects hindering the growth of crystallite size. Shift in IR absorption band (Fe sup(3+)-O sup(2-)) towards higher frequency side is an evidence of B-site occupancy of Nd sup(3+) ions.
