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Large Magnetocaloric Effect In Re-Entrant Ferromagnet Prmn 1.4fe0.6ge2, Rong Zeng, S Dou, Jianli Wang, Stewart Campbell
Large Magnetocaloric Effect In Re-Entrant Ferromagnet Prmn 1.4fe0.6ge2, Rong Zeng, S Dou, Jianli Wang, Stewart Campbell
Jianli Wang
Magnetocaloric effects (MCE) at multiple magnetic phase transition temperatures in PrMn1.4Fe0.6Ge2 were investigated by heat capacity and magnetization measurements. PrMn1.4Fe0.6Ge2 is of a re-entrant ferromagnet and performs multiple magnetic phase transitions in the temperature range from 5 to 340 K. A large magnetic entropy change (−ΔSM) 8.2 J/kg K and adiabatic temperature change (ΔTad) 4.8 K are observed for a field change of 0–1.5 T around 25.5 K, associated with the field-induced first order magnetic phase transition (FOMT) from the antiferromagnetic to the ferromagnetic state with an additional Pr magnetic contribution. These results suggest that a re-entrant ferromagnet is probably …