Two successive magnetic transitions induced large refrigerant capacity in HoPdIn compound

Magnetic properties and magnetocaloric effect (MCE) in HoPdIn have been studied by magnetization and heat capacity measurements. The compound undergoes two successive magnetic transitions at 6 K and 23 K, and resulting two peaks in the temperature dependence of magnetic entropy change curves, −ΔSM (T). Two peaks are partly overlapping and induced a large refrigerant capacity (RC). For a field change of 0–7 T, the peak values of −ΔSM are 17.7 J/kg K around TC and 10.0 J/kg K around TM, with a large RC value of 635 J/kg. The large reversible MCE and RC indicate that the HoPdIn could be a promising candidate for low temperature magnetic refrigeration.