Large magnetocaloric effect in spinel CdCr2S4

Abstract

Magnetocaloric effect in CdCr2S4 was investigated by magnetization and heat capacity measurements. CdCr2S4 is of a cubic spinel structure with soft ferromagnetism and performs reversible magnetic entropy in the whole experimental temperature range from 56to128K. A large magnetic entropy change ∼7.04J∕kgK and adiabatic temperature change ΔTad∼2.6K are revealed for a field change of 0–5T near the Curie temperature of 87K. These results suggest that sulfospinel probably is a promising candidate as working material in magnetic refrigeration technology.