Giant magnetocaloric effect in the Ising antiferromagnet DySb

W. J. Hu; J. Du; B. Li; Q. Zhang; Z. D. Zhang

doi:10.1063/1.2928233

Giant magnetocaloric effect in the Ising antiferromagnet DySb

W. J. Hu, J. Du, B. Li, Q. Zhang, Z. D. Zhang

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Abstract

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 Ńel temperature TN, 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 TN. The large magnetic-entropy change (-20.6 Jkg 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 lowerature range.

Original language	English
Article number	192505
Journal	Applied Physics Letters
Volume	92
Issue number	19
DOIs	https://doi.org/10.1063/1.2928233
State	Published - 2008
Externally published	Yes

Funding

This work has been supported by the National Natural Science Foundation of China under Grant No. 50331030.

Funders	Funder number
National Natural Science Foundation of China	50331030

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10.1063/1.2928233

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title = "Giant magnetocaloric effect in the Ising antiferromagnet DySb",

abstract = "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 {\'N}el temperature TN, 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 TN. The large magnetic-entropy change (-20.6 Jkg 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 lowerature range.",

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AU - Du, J.

AU - Li, B.

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AB - 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 Ńel temperature TN, 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 TN. The large magnetic-entropy change (-20.6 Jkg 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 lowerature range.

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Giant magnetocaloric effect in the Ising antiferromagnet DySb

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