Fig. 6: Magnetocaloric effects in compositionally engineered (Ho)ErCo2-based alloys.
a Comparison of the temperature-dependent magnetic entropy change (−ΔSm(T)) of a bulk sample (black) and gas-atomised (blue) ErCo1.96Fe0.04 particle. The inset shows a scanning electron microscopy (SEM) image of a gas-atomised sample. b Temperature-dependent magnetisation M(T) measurements of the cooling and heating branches from 5 K to 100 K at 1 K intervals (µ0H = 1T) for a series of magnetic refrigerants with tailored transition temperatures, the spherical particles in AMR with different colours correspond to different magnetic refrigerants with different transition temperatures in b. c Temperature-dependent magnetic entropy change −ΔSm(T) curves of magnetic refrigerants with tailored transition temperatures covering the large temperature window from 20 K to 77 K. d Adiabatic temperature change (ΔTad) at the field change (ΔH) of 5T of the selected magnetic refrigerants developed in this work at their transition temperatures. The selected colours of the curves in b–d correspond to the colour of listed alloy compositions.
