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Magnetic properties of Mn54Al46C2.44/Sm2Fe17N3 and Mn54Al46C2.44/Fe65Co35 composites

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Abstract

Ferromagnetic τ-phase Mn54Al46C2.44 particles were synthesized, and its composites with commercial Sm2Fe17N3 and synthesized Fe65Co35 powders were fabricated. Smaller grain size than the single domain size of the Mn54Al46C2.44 without obvious grain boundaries and secondary phases is the origin for the low intrinsic coercivity. It was confirmed that the magnetic properties of the Mn54Al46C2.44 can be enhanced by magnetic exchange coupling with the hard magnetic Sm2Fe17N3 and soft magnetic Fe65Co35. The high degrees of the exchange coupling were verified by calculating first derivative curves. Thermo-magnetic stabilities of the composites from 100 to 400 K were measured and compared. It was demonstrated that the Mn54Al46C2.44 based composites containing Sm2Fe17N3 and Fe65Co35 could be promising candidates for future permanent magnetic materials with the proper control of purity, magnetic properties, etc.

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Authors and Affiliations

  1. Powder and Ceramic Division, Korea Institute of Materials Science, Changwon, 51508, Korea

    Hui-Dong Qian, Ping-Zhan Si, Jung Tae Lim, Jong-Woo Kim, Jihoon Park & Chul-Jin Choi

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  1. Hui-Dong Qian
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  2. Ping-Zhan Si
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  3. Jung Tae Lim
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  4. Jong-Woo Kim
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  5. Jihoon Park
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  6. Chul-Jin Choi
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Correspondence to Jihoon Park.

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Qian, HD., Si, PZ., Lim, J.T. et al. Magnetic properties of Mn54Al46C2.44/Sm2Fe17N3 and Mn54Al46C2.44/Fe65Co35 composites. J. Korean Phys. Soc. 73, 1703–1707 (2018). https://doi.org/10.3938/jkps.73.1703

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  • DOI: https://doi.org/10.3938/jkps.73.1703

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