Abstract
We report the magnetocaloric effect (MCE) in a polycrystalline plumbide sample of Ho2Pd2Pb. Arc-melted Ho2Pd2Pb crystallizes in Mo2B2Fe type of tetragonal crystal structure and shows an antiferromagnetic behaviour with Néel temperature of 4.5 K. The Arrott plots indicate that Ho2Pd2Pb undergoes a second order antiferromagnetic phase transition. The calculated isothermal magnetic entropy change (ΔSm), and relative power cooling (refrigeration capacity) for a change of field 0–8 T are 17.8 J kg−1 K−1, and 680(497) J kg−1 respectively. The obtained results revealed that Ho2Pd2Pb belongs to a family of large MCE magnetic materials.
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