Abstract
The magnetic properties and phase composition of the Sm(Co0.45Fe0.15Cu0.40)5 alloy prepared by the strip-casting technique (the casting of alloy on a water-cooled copper wheel at a velocity of cooling surface of ~1 m/s) are studied. Curves of magnetization of thermally demagnetized starting plates (after strip casting) and plates subjected to low-temperature treatment at 350°С for 120 h and the hysteresis loops were measured in magnetizing fields of up to 140 kOe. It is shown that the magnetization of samples (σ140 and σr) substantially decreases after the annealing; in this case, the coercive force (jHc) increases abruptly. It is assumed that the observed regularities of magnetic hardening can be related to the existence of nanosized Cu-enriched areas, within which the antiferromagnetic order in the Sm(Co, Fe, Cu)5 lattice is realized. These areas in the ferromagnetic phase with the lower copper content can be domain-wall pinning centers.
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Original Russian Text © A.A. Lukin, N.B. Kolchugina, Yu.S. Koshkid’ko, A.V. Kamynin, D.Yu. Vasilenko, 2018, published in Perspektivnye Materialy, 2018, No. 3, pp. 19–27.
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Lukin, A.A., Kolchugina, N.B., Koshkid’ko, Y.S. et al. Magnetic Properties of the Sm(Co0.45Fe0.15Cu0.40)5 Alloy Prepared by Strip Casting. Inorg. Mater. Appl. Res. 9, 900–905 (2018). https://doi.org/10.1134/S2075113318050192
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DOI: https://doi.org/10.1134/S2075113318050192