Effect of Mn Doping on the Structural, Magnetic, and Magnetocaloric Effect of Fe{sub 17}Dy{sub 2} Compounds

Journal Article · Mon Jan 15 04:00:00 EST 2018 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-017-4210-6· OSTI ID:22774140

Guo, Y. B.; Zhao, S. Q.; Wang, D.; Zhou, X.; Li, L.; Du, Y. S.; Rao, G. H. ^[1]

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

Crystal structural and magnetic properties of polycrystalline (Fe{sub 1−x}Mn{sub x}){sub 17}Dy{sub 2} (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 (Fe{sub 1−x}Mn{sub x}){sub 17}Dy{sub 2} forms as a substitutional solid solution with the hexagonal Th{sub 2}Ni{sub 17} type. The unit cell volume increases with Mn content. The Curie temperature (T{sub C}) can be tuned from 364 K for x = 0.0 to 80 K for x = 0.3. The magnetic transition at T{sub 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{sub M}|) for (Fe{sub 1−x}Mn{sub x}){sub 17}Dy{sub 2} (x = 0.0, 0.1, and 0.2) compounds are 3.9, 2.8, and 1.7 J kg{sup −1} k{sup −1}, respectively. The high ΔS{sub M}, appropriate T{sub C}, and a high performance-to-cost ratio make (Fe{sub 1−x}Mn{sub x}){sub 17}Dy{sub 2} compounds a candidate materials for room-temperature magnetic refrigeration applications.

• OSTI ID: 22774140
• Journal Information: Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 1 Vol. 31; ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL DOPING
CRYSTAL STRUCTURE
CURIE POINT
ENTROPY
IRON COMPOUNDS
MAGNETIC PROPERTIES
MANGANESE
MANGANESE COMPOUNDS
PARAMAGNETISM
POLYCRYSTALS
REFRIGERATION
SOLID SOLUTIONS
TEMPERATURE RANGE 0273-0400 K
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION