Abstract
Abstract Nanocrystalline nickel ferrite (NiFe 2 O 4 ) with crystallite size ∼9 nm has been synthesized by high-energy milling method from a mixture of α-Fe 2 O 3 and NiO. Mossbauer spectroscopy, X-ray diffraction, transmission electron microscopy, and magnetization measurements have been used to investigate the structural and magnetic states of mechanosynthesized spinel ferrite. The observed reduction of the magnetization in nanoscale NiFe 2 O 4 is attributed to the mechanically induced non-equilibrium cation arrangement and to the canted spin configuration.
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