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High Field Magnetization Investigation and Mean Field Theory in Amorphous Co75Er17B8 Ribbons

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Abstract

Amorphous Co75Er17B8 ribbons were prepared by the melt spinning technique, and their magnetic properties were studied. Mean field theory was used to describe the temperature dependence of magnetization. High-field magnetization studies performed in magnetic fields up to 15 T have revealed a magnetic behavior typical of a non-collinear magnetic structure of Er and Co sublattices. The simulated magnetization curves show the existence of two critical fields at H cri1 = 9.5 T and H cri2 = 94.2 T, corresponding to collinear ferrimagnet, and collinear field-forced ferromagnetic behaviors. The high value of H cri2 highlights the strong antiferromagnetic interaction between Er and Co sublattices. From the non-collinear regime, the inter-subnetwork molecular field coefficients of the ferrimagnetic alloy were accurately evaluated. In addition, it is shown that the region of canted moments can be satisfactorily described by a phase diagram in the H-T plane.

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Authors and Affiliations

  1. LPMMAT, Faculté des Sciences Ain Chock, Université Hassan II de Casablanca, BP 5366, Mâarif, Casablanca, Morocco

    F. Z. Rachid, R. Moubah, S. Derkaoui & H. Lassri

  2. LPCMI, Faculté des Sciences Ain Chock, Université Hassan II de Casablanca, BP 5366, Mâarif, Casablanca, Morocco

    R. El Ouatib

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  1. F. Z. Rachid
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  2. R. Moubah
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  3. R. El Ouatib
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  4. S. Derkaoui
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  5. H. Lassri
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Correspondence to R. Moubah.

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Rachid, F.Z., Moubah, R., El Ouatib, R. et al. High Field Magnetization Investigation and Mean Field Theory in Amorphous Co75Er17B8 Ribbons. J Supercond Nov Magn 31, 2073–2077 (2018). https://doi.org/10.1007/s10948-017-4447-0

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  • DOI: https://doi.org/10.1007/s10948-017-4447-0

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