摘要
A large reversible magnetocaloric effect accompanied by a second order magnetic phase transition from PM to FM is observed in the Ho Pd compound. Under the magnetic field change of 0–5 T, the magnetic entropy change-ΔS max M and the refrigerant capacity RC for the compound are evaluated to be 20 J/(kg·K) and 342 J/kg, respectively. In particular,large-ΔS max M(11.3 J/(kg·K)) and RC(142 J/kg) are achieved under a low magnetic field change of 0–2 T with no thermal hysteresis and magnetic hysteresis loss. The large reversible magnetocaloric effect(both the large-ΔS M and the high RC)indicates that Ho Pd is a promising material for magnetic refrigeration at low temperature.
A large reversible magnetocaloric effect accompanied by a second order magnetic phase transition from PM to FM is observed in the Ho Pd compound. Under the magnetic field change of 0–5 T, the magnetic entropy change-ΔS max M and the refrigerant capacity RC for the compound are evaluated to be 20 J/(kg·K) and 342 J/kg, respectively. In particular,large-ΔS max M(11.3 J/(kg·K)) and RC(142 J/kg) are achieved under a low magnetic field change of 0–2 T with no thermal hysteresis and magnetic hysteresis loss. The large reversible magnetocaloric effect(both the large-ΔS M and the high RC)indicates that Ho Pd is a promising material for magnetic refrigeration at low temperature.
基金
supported by the National Natural Science Foundation of China(Grant Nos.51322605,11104337,51271192,and 11274357)
the Knowledge Innovation Project of the Chinese Academy of Sciences