Abstract
A large reversible magnetocaloric effect has been observed in Tm3Co compound. The Tm3Co compound exhibits two successive magnetic transitions with the increasing temperature: antiferromagnetic (AFM) to ferromagnetic (FM) transition at 4.5K and FM to paramagnetic (PM) transition at 6.5K. Under a magnetic field change of 5 T, the maximum value of magnetic entropy change −ΔSM is 19.9J/kgK at 7.5K and the refrigerant capacity power (RCP) is 300J/kg with no hysteresis loss. In particular, the large reversible −ΔSM (11.6J/kgK) is achieved for a low magnetic field change of 2T. The large reversible magnetocaloric effect (both the large −ΔSM and the high RCP) indicates that Tm3Co could be a promising candidate for magnetic refrigeration.
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