Large magnetocaloric effect in single crystal Pr_0.63Sr_0.37MnO₃

This article reports the magnetocaloric effect in a single crystal Pr0.63Sr0.37MnO3, which undergoes a very sharp ferromagnetic-to-paramagnetic phase transition at ~300 K. A large magnetic entropy change of 8.52 J/kg K and a large adiabatic temperature change of 5.65 K for an applied field change of 50 kOe were observed around 300 K; this allows water to be used as a heat transfer fluid in the room-temperature magnetic refrigeration regime. The distribution of entropy change (SM) was found to be very uniform and which is desirable for an Ericson-cycle magnetic refrigerator. The large magnetic entropy change induced by a relatively low magnetic field change is beneficial for household application.