Structural and magnetic properties of non ferrous metals doped nickel ferrite nanoparticles

Abstract

Nanoferrites are, of late, used much primarily because of its extensive application in the domain of industrial and research. The major applications are magnetic data storage, catalysts, ferro fluids, magnetic drug delivery and hyper thermia cancer treatment. The properties of nanoferrites are, in a way, sensitive enough to the synthesis technique, particle size, doping materials, sintering temperature, chemical composition and cation distribution. The inverse spinel of nickel ferrite includes the properties of low coercivity, a mearge amount of conductivity, less eddy current losses, catalytic behaviour, electrochemical stability is high and ferromagnetic. Nickel ferrite is mainly used in magnetic refrigeration, microwave absorbers, high density recording media, transformer cores and communication. There are ever so many methods used to synthesis nanoparticles. Among this, co-precipitation method is arguably to be an inexpensive way to produce fine nickel ferrite particles. The Ni1-xCaxFe2O4, Ni1-xPbxFe2O4, NiFe2-xAlxO4 and NiFe2-xBixO4 (where x = 0.0 to 1.0) nanoparticles are meticulously applying the mechanism of co-precipitation. The structural, morphological, elemental, functional and magnetic characterisations are examined by using XRD, SEM, EDX, FTIR and VSM. It is to be noted that XRD pattern shows that all the prepared samples encompass spinel structure. While it is true that the lattice parameter drastically rises with substituting materials of Ca2+, Pb2+ and Bi3+, Al3+ lattice constant value decreases. Increasing/decreasing lattice constant value depends on the ionic radius of substituting material. X-ray density values depend on the dopant material atomic weight. Scherrer formula is used to analyse the particle size. newline