Giant magnetocaloric effect in the Ising antiferromagnet DySb

The magnetic phase transitions and the magnetocaloric effect in the Ising antiferromagnet DySb have been studied. A field-induced sign change of the magnetocaloric effect has been observed which is related to a first-order field-induced metamagnetic transition from the antiferromagnetic to the ferro...

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Bibliographic Details
Published in:Applied physics letters 2008-05, Vol.92 (19), p.192505-192505-3
Main Authors: Hu, W. J., Du, J., Li, B., Zhang, Q., Zhang, Z. D.
Format: Article
Language:English
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Summary:The magnetic phase transitions and the magnetocaloric effect in the Ising antiferromagnet DySb have been studied. A field-induced sign change of the magnetocaloric effect has been observed which is related to a first-order field-induced metamagnetic transition from the antiferromagnetic to the ferromagnetic states at/below the Néel temperature T N , while the negative field-induced entropy change is found to be associated with the first-order magnetic transition from the paramagnetic to the ferromagnetic states above T N . The large magnetic-entropy change ( − 20.6 J ∕ kg K at 11 K for a field change of 7 T ), together with small hysteresis, suggests that DySb could be a potential material for magnetic refrigeration in the low-temperature range.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2928233