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Electrical Properties of Mn-Doped Ni x Zn0.9−x Fe2O4 Particles

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Abstract

High-purity Mn-doped Ni x Zn0.9−x Fe2 O 4 particles were fabricated by conventional ceramic processing. The ac conductivity reveals a temperature-dependent behavior at low frequencies and temperature-independent behavior at high frequencies which could be an indication of ionic conductivity because of activated frequency ranges. The dc conductivities of Mn-substituted Ni-Zn spinel ferrites [Ni x Zn0.9−x Mn0.1:Fe2 O 4 (where 0.3 ≤x≤ 0.7)] are found to obey the Arrhenius plot with activation energies between 016 and 0.18 eV. The electrical characterization confirms that ac conductivity is found to be almost independent of frequency at lower frequencies up to 10 kHz and however increases with temperature elevation. Additionally, the imaginary component of dielectric function obeys the power law of frequency while it possesses temperature dependency as well. This can be attributed to the molecular interatomic interactions among Mn-substituted Ni-Zn spinel ferrites. Functional analysis of the electrical conductivities and dielectric permittivity suggests that ionic motions are strongly coupled within the spinel ferrite nanocomposites because of the stimulated frequency ranges

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Acknowledgments

This work is supported by TUBITAK (The Scientific and Technological Research Council of Turkey) with Project number 213M174.

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Authors and Affiliations

  1. TUBITAK-UME, National Metrology Institute, PO Box 54, 41470, Gebze, Kocaeli, Turkey

    F. Genc & H. Sözeri

  2. Department of Computer Engineering, Istanbul Sabahattin Zaim University, Halkali Cad. No.2, 34303, K.Çekmece-Istanbul, Turkey

    B. Ünal

  3. BioNanoTechnology R&D Center, Fatih University, 34500, B.Çekmece-Istanbul, Turkey

    A. Baykal

  4. Department of Chemistry, Fatih University, 34500, B.Çekmece-Istanbul, Turkey

    A. Baykal

  5. Department of Physics, Gebze Institute of Technology, 41400, Gebze, Kocaeli, Turkey

    F. Genc

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  1. F. Genc
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  4. H. Sözeri
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Correspondence to H. Sözeri.

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Genc, F., Ünal, B., Baykal, A. et al. Electrical Properties of Mn-Doped Ni x Zn0.9−x Fe2O4 Particles. J Supercond Nov Magn 28, 1055–1064 (2015). https://doi.org/10.1007/s10948-014-2833-4

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  • DOI: https://doi.org/10.1007/s10948-014-2833-4

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