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Magnetic and dielectric properties of cadmium substituted nickel cobalt nanoferrites

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Abstract

Nano particles of CdXNi(0.5−X)Co0.5Fe2O4 (x = 0.0, 0.1, 0.2 and 0.3) were prepared by coprecipitation method. The lattice constant and distribution of cation in A-site and B-site have been deduced through X-ray diffraction (XRD) data analysis. The lattice constant (Ǻ) was found to increase with increase in Cd2+ concentration in the spinel structure of Ni–Co ferrites. The saturation magnetization was found to decrease with increase in Cd concentration for all the samples. It is observed that the Curie temperature (Tc) is higher than in bulk counterpart. The dielectric constant increases with increase in Cd concentration. This increase in dielectric constant is attributed to the formation of Fe3+ ion in the octahedral site which increases the hopping between Fe3+ and Fe2+.

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Authors and Affiliations

  1. Department of Physics, Sri Sairam Engineering College, Chennai, 600044, India

    G. Sathishkumar

  2. Department of Physics, Karpaga Vinayaga College of Engineering and Technology, Madhurantakam, 603308, India

    C. Venkataraju

  3. Department of Physics, Anna University Chennai, Chennai, 600025, India

    K. Sivakumar

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  1. G. Sathishkumar
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  2. C. Venkataraju
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  3. K. Sivakumar
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Correspondence to G. Sathishkumar.

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Sathishkumar, G., Venkataraju, C. & Sivakumar, K. Magnetic and dielectric properties of cadmium substituted nickel cobalt nanoferrites. J Mater Sci: Mater Electron 24, 1057–1062 (2013). https://doi.org/10.1007/s10854-012-0878-3

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  • DOI: https://doi.org/10.1007/s10854-012-0878-3

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