Abstract
Abstract Magnetic transitional behaviors and magnetocaloric effect of the intermetallic compound Ho3Pd2 have been studied. It exhibits a second order magnetic transition from ferromagnetic (FM) to paramagnetic (PM) states at a Curie temperature (TC) of 9.6 K. In the PM region, the magnetic susceptibility of the Ho3Pd2 compound follows the Curie-Weiss law. The paramagnetic Curie temperature (θp) was evaluated to be 5.3 K, and the effective magnetic moment (μeff) to be 10.5 μB/Ho. The positive value of θp indicates the ferromagnetic interactions in the ordering state of Ho3Pd2 and the effective magnetic moment is close to the theoretical value 10.6 μB for the Ho3+ ion, which suggests that the Pd ions in Ho3Pd2 are non-magnetic. Under the magnetic field change of 0–5 T, the maximum magnetic entropy change (−ΔSM) and the refrigerant capacity (RC) for this compound are evaluated to be 18.3 J kg−1 K−1 and 301.5 J kg−1, respectively, with no thermal and field hysteresis loss.
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