Large Magnetocaloric Effect in Nd0:5Sr0:5MnO3

Peng Chen；You-Wei Du

Chinese Journal of Physics

39卷4期（2001 / 08 / 01）

357 - 362

英文

A large magnetic entropy change (7.5 J/kg. K) was discovered in Nd0:5Sr0:5MnO3 under a low magnetic field of 10 kOe at the charge-ordered state transition temperature (183 K). It exceeds the magnetic entropy change in Gd by a factor of 2.4 at the phase transition temperature under the same magnetic field. The physical mechanism is related to the field-induced first-order magnetic, electron and structural transition (from an antiferromagnetic charge-ordered state to a ferromagnetic charge-disordered state).