Giant magnetocaloric effect of MnAs1−xSbx
- 12 November 2001
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 79 (20), 3302-3304
- https://doi.org/10.1063/1.1419048
Abstract
A giant magnetocaloric effect was found in MnAs, which undergoes a first-order ferromagnetic to paramagnetic transition at 318 K. The magnetic entropy change caused by a magnetic field of 5 T is as large as 30 J/K kg at the maximum value, which exceeds that of conventional magnetic refrigerant materials by a factor of 2–4. The adiabatic temperature change reaches 13 K in a field change of 5 T. The substitution of 10% Sb for As reduces the thermal hysteresis and lowers the Curie temperature to 280 K, while the giant magnetocaloric properties are retained.Keywords
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