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Heat treatment effects on spinel phase of Zn x Ni1 − x Fe2O4 and MnFe2O4 nanoferrites

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Abstract

We report the effects of heat treatment on Zn x Ni1 − x Fe2O4 (x = 0, 0.5 and 1.0) and MnFe2O4 ferrite nanoparticles. The as-prepared compounds were sintered from 400°C to 1100°C. Pure ZnFe2O4 (x = 1.0) and MnFe2O4 could be obtained under low reaction temperature of 200°C. NiFe2O4 (x = 0) and Zn0.5Ni0.5Fe2O4 (x = 0.5) nanoferrites crystallized with single phase cubic spinel structure after annealing at 600°C. The single phase cubic spinel structure of these compounds was destroyed after annealing at temperature above 700°C. The magnetization measurements indicate superparamagnetic behavior of the nanosized compounds produced.

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Authors and Affiliations

  1. Department of Physics, University of the Free State, P/Bag X13, Phuthaditjhaba, 9866, South Africa

    J. Z. Msomi & J. J. Dolo

  2. School of Physics, University of KwaZulu-Natal, P/Bag X54001, Durban, 4000, South Africa

    T. Moyo

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  1. J. Z. Msomi
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  2. T. Moyo
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  3. J. J. Dolo
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Correspondence to J. Z. Msomi.

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Msomi, J.Z., Moyo, T. & Dolo, J.J. Heat treatment effects on spinel phase of Zn x Ni1 − x Fe2O4 and MnFe2O4 nanoferrites. Hyperfine Interact 197, 59–64 (2010). https://doi.org/10.1007/s10751-010-0197-0

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  • DOI: https://doi.org/10.1007/s10751-010-0197-0

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