The magnetic H-T phase diagram and magnetocaloric effect in the recently discovered high-temperature heavy-fermion compound YbCoC2 have been studied. With the increase in the external magnetic field YbCoC2 experiences the metamagnetic transition and then transition to the ferromagnetic state. The dependencies of magnetic entropy change -ΔSm(T) have segments with positive and negative magnetocaloric effects for ΔH≤6~T. For ΔH=9~T magnetocaloric effect becomes positive with a maximum value of -ΔSm(T) is 4.1 J / kg K and a refrigerant capacity is 56.6 J / kg.
@article{arxiv.2303.07802,
title = {Magnetocaloric effect in the high-temperature antiferromagnet YbCoC2},
author = {D. A. Salamatin and V. N. Krasnorussky and A. V. Semeno and A. V. Bokov and A. Velichkov and Z. Surowiec and A. V. Tsvyashchenko},
journal= {arXiv preprint arXiv:2303.07802},
year = {2023}
}