Abstract
The magnetic properties and magnetocaloric effect (MCE) in the ternary intermetallic compound ErMn 2Si 2 have been studied by magnetization and heat capacity measurements. A giant reversible MCE has been observed, accompanied by a second order magnetic phase transition from paramagnetic to ferromagnetic at ∼4.5 K. Under a field change of 5 T, the maximum value of magnetic entropy change (-δS M max) is 25.2 J kg -1 K -1 with no thermal and field hysteresis loss, and the corresponding maximum value of adiabatic temperature change (δT ad max) is 12.9 K. Particularly, the values of -δS M max and δT ad max reached 20.0 J kg -1 K -1 and 5.4 K for a low field change of 2 T, respectively. The present results indicate that the ErMn 2Si 2 compound is an attractive candidate for low temperature magnetic refrigeration.
Original language | English |
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Article number | 152403 |
Journal | Applied Physics Letters |
Volume | 100 |
Issue number | 15 |
DOIs | |
State | Published - 2012/04/09 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)