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Enhancement of structural and electrical properties of novelty nanoferrite materials

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Abstract

Novelty Cu–Cr nanoferrite, with the general formula CuCr0.3R0.03Fe1.67O4 (where R = Sm, Nd, Ce and La), were prepared by standard ceramic method and characterized by X-ray diffraction (XRD) analysis. Field emission scanning electron microscope (FESEM) and Energy dispersive X-ray analysis (EDX) were obtained for all samples. The effect of doping Cu–Cr ferrite with different rare earth (R3+) types on the structural and electrical properties showed that the ionic radius, electronic configuration and ionization potential for different R3+ could explain the results. Introducing R3+ in Cu–Cr ferrite retained parent cubic spinel structure ferrite. All R3+ types induced cation redistribution. At low temperature the ionic radius of R3+ control the conduction, whereas at high temperature the ionization potential have the decisive effect. It was found that La-doped Cu Cr sample had the lowest AC conductivity due to its large ionic radius and high ionization potential promising application in memories and microelectronics.

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Authors and Affiliations

  1. Physics Department, Faculty of Science, Cairo University, Giza, Egypt

    Asmaa A. H. El-Bassuony

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  1. Asmaa A. H. El-Bassuony
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Correspondence to Asmaa A. H. El-Bassuony.

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El-Bassuony, A.A.H. Enhancement of structural and electrical properties of novelty nanoferrite materials. J Mater Sci: Mater Electron 28, 14489–14498 (2017). https://doi.org/10.1007/s10854-017-7312-9

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  • DOI: https://doi.org/10.1007/s10854-017-7312-9

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