Abstract

Extensive use of magnetic nanoparticles (MNP) in recent years in almost every sphere of daily life motivates the researchers to look for new vistas for human benefit. In particular, physical and chemical properties of spinel ferrites [MFe 2 O 4 ; M = divalent metal ion] have been immensely tailored at nano-scale and thus vastly investigated mainly due to surface and quantum size effects [1]. Nature and distribution of charges in these spinel ferrites decide their structural and magnetic properties. Among these, nickel ferrite (NiFe 2 O 4 ) have been widely investigated due to its unique structural and magnetic properties including super paramagnetism, quantum tunneling of magnetization, high saturation magnetization and high magnetocrystalline anisotropy.

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