Title: Morphological studies and dielectrical behaviour of nickel substituted on Mg-Mn nanoferrites

Authors: S.R. Chitra; S. Sendhilnathan

Addresses: Department of Physics, University College of Engineering, Anna University, Chennai, Pattukkottai, Tamil Nadu, India ' Department of Physics, University College of Engineering, Anna University, Chennai, Pattukkottai, Tamil Nadu, India

Abstract: Mg-Mn-Ni ferrites of different compositions, Mg0.40Mn0.60-xNixFe204 with x = 0.00, 0.05 and 0.15 were prepared by a co-precipitation technique at 30°C to 60°C. Their structural and dielectrical properties were studied using XRD, SEM and AFM analyses, FT-IR technique and impedance analyses. From these, we observed that Mg-Mn-Ni ferrites prepared by this method have higher resistivity than that prepared by the conventional ceramic method and others. Higher resistivity ferrite materials are suitable particularly for high-frequency applications where eddy current losses are required to be low.

Keywords: ferrites; X-ray diffraction; dielectric constant; dielectric devices; dielectric function; impedance spectroscopy; morphology; nickel; nanoferrites; nanomaterials; nanotechnology; magnesium; manganese; co-precipitation.

DOI: 10.1504/WRSTSD.2014.065676

World Review of Science, Technology and Sustainable Development, 2014 Vol.11 No.2, pp.162 - 175

Received: 30 Sep 2013
Accepted: 06 May 2014

Published online: 25 Nov 2014 *

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