Synthesis of nanoparticles Ni0.55Zn0.45Fe 2O4 by novel precursor method showing enhanced resistivity (original) (raw)

2012

Abstract

ABSTRACT Nanoparticles Ni0.55Zn0.45Fe2O4 was synthesized at low temperature using novel precursor method. The single spinel phase crystallization of sample was confirmed using XRD and IR spectra. Nanosize particles were confirmed using XRD and TEM images. Isomer shift in Mossbauer spectral studies are consistent with Fe ions in trivalent state. DC resistivity was of the order of 108 ohm cm that is two orders higher than those reported for NiZn ferrites prepared by conventional ceramic method. The high resistivity was attributed to nanosize particles, absence of Fe+2 ions and method of preparation.

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