Magnetocaloric effect in the high-temperature antiferromagnet YbCoC2
Abstract
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 - Sm (T) have segments with positive and negative magnetocaloric effects for H ≤ 6~T. For H = 9~T magnetocaloric effect becomes positive with a maximum value of - Sm (T) is 4.1 J / kg K and a refrigerant capacity is 56.6 J / kg.
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