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The Effect of Milling with Combined Surfactants on the Magnetic Properties and Microstructure of Submicron Sm2Fe17N3 Powders

  • ELECTRICAL AND MAGNETIC PROPERTIES
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Abstract

The results of the application of a combination of several surfactants in preparing submicron hard magnetic Sm2Fe17N3 powders by milling in a centrifugal mill are reported. Along with methyl caproate, to protect the powder against oxidation, the efficiency of siloxane has been studied. The application of the combined surfactants allowed us to increase both the (BH)max of the Sm2Fe17N3 powder to 23.6 MG Oe and its corrosion resistance. The effect of milling kinetics on the angular dependence of the coercive force Hc has been determined. Information on the primary mechanism of magnetization reversal of the powders has been obtained.

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Funding

This study was performed in terms of the state assignment of the Ministry of Science and Higher Education of the Russian Federation for the Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences (theme Magnit, no. АААА-А18-118020290129-5) and in terms of the Federal Academic Leadership Program Priority 2030. The study was performed using equipment at the Collective Access Centers of the Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences and Postovskii Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences (Spectroscopy and analysis of organic compounds).

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Authors and Affiliations

  1. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620108, Ekaterinburg, Russia

    D. A. Kolodkin & A. G. Popov

  2. Yeltsin Ural Federal University, Institute of Natural Sciences and Mathematics, 620002, Ekaterinburg, Russia

    D. A. Kolodkin & A. G. Popov

  3. Postovskii Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences, 620108, Ekaterinburg, Russia

    T. I. Gorbunova

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  1. D. A. Kolodkin
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  2. A. G. Popov
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  3. T. I. Gorbunova
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Correspondence to D. A. Kolodkin.

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Translated by N. Kolchugina

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Kolodkin, D.A., Popov, A.G. & Gorbunova, T.I. The Effect of Milling with Combined Surfactants on the Magnetic Properties and Microstructure of Submicron Sm2Fe17N3 Powders. Phys. Metals Metallogr. 124, 263–270 (2023). https://doi.org/10.1134/S0031918X23600124

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