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Role of Zn substitution on structural, magnetic and dielectric properties of Cu–Cr spinel ferrites

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Abstract

The Zn substituted copper chromium spinel ferrites with the chemical formula ZnxCu1−xCr0.5Fe1.5O4 (x = 0–0.8) have been fabricated using powder metallurgical route. The synthesized powders have been investigated by thermal analysis, X-ray diffraction, Fourier transform infrared spectroscopy, Field emission scanning electron microscopy, magnetic and electrical measurement. The X-ray diffraction has confirmed the formation of spinel structure. It has been observed that lattice parameter increases but both the bulk and X-ray density decrease with the increase of Zn concentration. FTIR spectra show two prominent bands in the range of 400–800 cm−1 confirming the formation of spinel ferrites. The saturation magnetization increases up to x = 0.4. As the concentration of Zn increases further, the saturation magnetization decreases. The dielectric tangent loss and dielectric constant (ε) decreases while the ac conductivity increases with increasing frequency.

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Authors and Affiliations

  1. Department of Physics, Lahore College for Women University, Lahore, 54000, Pakistan

    S. Anjum, H. Nazli, R. Khurram & Talat Zeeshan

  2. Centre of Excellence for Solid State Physics, University of the Punjab, Lahore, Pakistan

    S. Riaz

  3. Department of Physics, COMSATS Institute of Information Technology, Lahore, Pakistan

    A. Usman

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  1. S. Anjum
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  2. H. Nazli
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  3. R. Khurram
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  4. Talat Zeeshan
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Correspondence to S. Anjum.

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Anjum, S., Nazli, H., Khurram, R. et al. Role of Zn substitution on structural, magnetic and dielectric properties of Cu–Cr spinel ferrites. Indian J Phys 90, 869–880 (2016). https://doi.org/10.1007/s12648-015-0817-2

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  • DOI: https://doi.org/10.1007/s12648-015-0817-2

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