Abstract
Magnetic properties and magnetocaloric effects (MCEs) of the Dy3Co compound are studied. Two successive magnetic transitions: the antiferromagnetic (AFM)-to-AFM transition at T AF =29 K and the AFM-to-paramagnetic (PM) transition with increasing temperature at the Néel temperature T N =44 K are observed. Dy3Co undergoes a field-induced metamagnetic transition from the AFM to the ferromagnetic (FM) state below T N , giving rise to a large MCE. The maximal value of magnetic entropy change ΔS m is −13.9 J/kg K with a refrigerant capacity (RC) of 498 J/kg around T N for a field change of 0–5 T. A sign change of MCE in Dy3Co with magnetic field and temperature is observed near the critical field where the metamagnetic transition occurs.
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Shen, J., Zhao, JL., Hu, FX. et al. Magnetocaloric effect in antiferromagnetic Dy3Co compound. Appl. Phys. A 99, 853–858 (2010). https://doi.org/10.1007/s00339-010-5613-4
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DOI: https://doi.org/10.1007/s00339-010-5613-4