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On the magnetic compensation of magnesium doped Ni-Cr ferrites

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Abstract

Mg-substituted ferrites NiMg x Fe1.1−(2/3)x Cr0.9O4 (0≤x≤0.4) were studied using X-ray diffraction, Mössbauer spectroscopy, and magnetic measurements. X-ray diffraction patterns show that all samples have cubic spinel structure. The temperature-dependent magnetic measurements revealed that the compensation point T K of NiFe1.1Cr0.9O4 starts to approach the Curie temperature T C as Mg2+ substitution of Fe3+ increases, until the magnetic compensation disappears at composition x=0.4. The magnetization data at all concentrations are discussed in the light of Néel’s molecular field model given the cations distribution obtained using the Mössbauer spectra analysis.

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Authors and Affiliations

  1. Département de Physique, Faculté des Sciences, Université Djilali Liabes, Sidi Bel Abbes, Algeria

    A. Rais, M. Ameri, N. Bouhadouza & A. Merine

  2. Laboratoire STEVA, Département de Chimie, Université de Mostaganem, Mostaganem, Algeria

    A. Addou

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  1. A. Rais
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  2. A. Addou
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  3. M. Ameri
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  4. N. Bouhadouza
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  5. A. Merine
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Correspondence to A. Rais.

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Rais, A., Addou, A., Ameri, M. et al. On the magnetic compensation of magnesium doped Ni-Cr ferrites. Appl. Phys. A 111, 665–669 (2013). https://doi.org/10.1007/s00339-012-7304-9

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