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We report the magnetocaloric effect (MCE) in a polycrystalline plumbidesample of $\mathrm{Ho_2Pd_2Pb}$. Arc-melted $\mathrm{Ho_2Pd_2Pb}$ crystallizesin $\mathrm{Mo_2B_2Fe}$ type of tetragonal crystal structure and shows anantiferromagnetic behavior with N\'{e}el temperature of 4.5 K. The Arrott plotsindicate that $\mathrm{Ho_2Pd_2Pb}$ undergoes a second-order antiferromagneticphase transition. The calculated isothermal magnetic entropy change ($\DeltaS_m$), and relative power cooling (refrigeration capacity) for a change offield 0-8 T are 17.8 J.kg$^{-1}$.K$^{-1}$, and 680(497)~J.kg$^{-1}$respectively. The obtained results revealed that $\mathrm{Ho_2Pd_2Pb}$ belongsto a family of large MCE magnetic materials.

Large magnetocaloric effect in $\mbox{Ho}_2\mbox{Pd}_{2}\mbox{Pb}$