Magnetocaloric effect in the ternary DyCo3B2 compound

A large magnetocaloric (MCE) effect has been observed for the ternary compound DyCo3B2. This material shows the magnetic ordering below TC = 22 K for H = 0 T. MCE has been determined based on the isothermal magnetization curves measurements and the isomagnetic heat capacity dependence on temperature. The maximum magnetic entropy change −ΔSM = 17.5 J kg−1K−1 and the adiabatic temperature change ΔTad = 14 K have been observed in the neighborhood of the magnetic phase transition at the magnetic field change of 9 T. The analysis of the magnetic contribution to the specific heat indicates on the important role of the crystal electric field and the anisotropy for the properties of the DyCo3B2 compound.

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► Magnetic phase transition at 22 K for DyCo3B2
► Important role of the crystal electric field and anisotropy.
► Significant magnetocaloric effect observed both in magnetometric and heat capacity measurements.
► Mass density determined for the correct units of the entropy change.