The magnetocaloric properties of (MnFeRu)2(PSiGe) have been studied by monitoring the differential scanning calorimetry (DSC) and the adiabatic temperature change. The compounds have the Curie temperature of 340–360 K. The DSC curves show sharp peaks, indicating a first-order magnetic transition. The thermal hysteresis is less than 2.3 K. Using our previous data, we examined the correlation between the DSC peak and the magnetic entropy change ΔSM. A strong positive correlation between these two quantities is observed. The analyses also suggest that ΔSM of (MnFeRu)2(PSiGe) reaches 11–16 J/ K kg in a field change of 1.5 T. The direct measurements of the adiabatic temperature change ΔTad have revealed ΔTad of 1.7–1.8 K at 1 T for (MnFeRu)2(PSiGe). These results suggest that (MnFeRu)2(PSiGe) compounds are potential candidates for magnetic refrigerant materials above room temperature up to 90 °C (~ 360 K).
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics