TY - JOUR
T1 - Large Magnetocaloric Effect of Ge-Doped (MnFeRu)2(PSi) Above Room Temperature
AU - Soejima, Kei
AU - Otsubo, Kensuke
AU - Ohnishi, Takayuki
AU - Wada, Hirofumi
N1 - Funding Information:
This work was partially supported by the Advanced Low Carbon Technology Research and Development Program (ALCA) of Japan Science and Technology Agency (JST) Grant Number JPMJAL1408 and by JSPS KAKENHI Grant Number 19K05254.
Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2021/11
Y1 - 2021/11
N2 - 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).
AB - 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).
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U2 - 10.1007/s10948-021-05995-8
DO - 10.1007/s10948-021-05995-8
M3 - Article
AN - SCOPUS:85112466920
SN - 1557-1939
VL - 34
SP - 2879
EP - 2884
JO - Journal of Superconductivity and Novel Magnetism
JF - Journal of Superconductivity and Novel Magnetism
IS - 11
ER -