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

Baidyanath Sahu; R. Djoumessi Fobasso; Buyisiwe M Sondezi; Andre M. Strydom

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

Strongly Correlated Electrons 2021-09-21 v1

Authors: Baidyanath Sahu , R. Djoumessi Fobasso , Buyisiwe M Sondezi , Andre M. Strydom

Abstract

We report the magnetocaloric effect (MCE) in a polycrystalline plumbide sample of $\mathrm{Ho_2Pd_2Pb}$ . Arc-melted $\mathrm{Ho_2Pd_2Pb}$ crystallizes in $\mathrm{Mo_2B_2Fe}$ type of tetragonal crystal structure and shows an antiferromagnetic behavior with N\'{e}el temperature of 4.5 K. The Arrott plots indicate that $\mathrm{Ho_2Pd_2Pb}$ undergoes a second-order antiferromagnetic phase transition. The calculated isothermal magnetic entropy change ( $\Delta S_m$ ), 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 $\mathrm{Ho_2Pd_2Pb}$ belongs to a family of large MCE magnetic materials.

Keywords

magnetocaloric effect ho2pd2pb antiferromagnet neel temperature refrigeration capacity

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@article{arxiv.2109.09619,
  title  = {Large magnetocaloric effect in $\mbox{Ho}_2\mbox{Pd}_{2}\mbox{Pb}$},
  author = {Baidyanath Sahu and R. Djoumessi Fobasso and Buyisiwe M Sondezi and Andre M. Strydom},
  journal= {arXiv preprint arXiv:2109.09619},
  year   = {2021}
}

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

Abstract

Keywords

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