Abstract
Nanocrystalline Ni0.35Zn0.65Fe2O4 synthesized by mechanical alloying method and subsequent annealing at 300°C has been characterized by XRD, TEM and Mossbauer spectroscopic techniques. Mossbauer spectroscopic study divulges the enhancement of magnetic order, ordering temperature and magnetization in nano-crystalline sample compared to its bulk counterpart. This magnetic enhancement has mostly been prompted by cation redistribution in the nanosized sample. Zinc having strong A site affinity determines the nature and intensity of site exchange of cations, which has a strong influence in the genesis of enhancement/reduction in magnetic property of nano-crystalline Ni–Zn ferrite samples.
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