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Effect of Mn Doping on the Structural, Magnetic, and Magnetocaloric Effect of Fe17Dy2 Compounds

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Abstract

Crystal structural and magnetic properties of polycrystalline (Fe1−x Mn x )17Dy2 (x = 0.0, 0.1, 0.2, and 0.3) compounds were studied by X-ray diffraction (XRD) and vibrating sample magnetometer (VSM) measurements. The results show that (Fe1−x Mn x )17Dy2 forms as a substitutional solid solution with the hexagonal Th2Ni17 type. The unit cell volume increases with Mn content. The Curie temperature (T C) can be tuned from 364 K for x = 0.0 to 80 K for x = 0.3. The magnetic transition at T C is a typical second-order ferromagnetic-paramagnetic transition. For an applied field change from 0 to 5 T, the maximum magnetic entropy change (| − ΔS M|) for (Fe1−x Mn x )17Dy2 (x = 0.0, 0.1, and 0.2) compounds are 3.9, 2.8, and 1.7 J kg−1 k−1, respectively. The high ΔS M, appropriate T C, and a high performance-to-cost ratio make (Fe1−x Mn x )17Dy2 compounds a candidate materials for room-temperature magnetic refrigeration applications.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (51461012), the Guangxi Key Laboratory of Information Materials (161011-Z, 161005-K, 151007-K), and the Guangxi Natural Science Foundation (2016GXNSFAA380030, 2016GXNSFGA380001).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China

    Y. B. Guo, L. Ma, S. Q. Zhao, D. Wang, X. Zhou, L. Li, Y. S. Du & G. H. Rao

  2. Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, 541004, China

    L. Ma, L. Li, Y. S. Du & G. H. Rao

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  1. Y. B. Guo
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  2. L. Ma
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  3. S. Q. Zhao
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  4. D. Wang
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  6. L. Li
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  7. Y. S. Du
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  8. G. H. Rao
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Correspondence to L. Ma.

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Guo, Y.B., Ma, L., Zhao, S.Q. et al. Effect of Mn Doping on the Structural, Magnetic, and Magnetocaloric Effect of Fe17Dy2 Compounds. J Supercond Nov Magn 31, 265–269 (2018). https://doi.org/10.1007/s10948-017-4210-6

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  • DOI: https://doi.org/10.1007/s10948-017-4210-6

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