Coexistence of inverse and normal magnetocaloric effect in A-site ordered NdBaMn2O6
作者： Q. Zhang , F. Guillou , A. Wahl , Y. Bréard , V. Hardy
DOI: 10.1063/1.3453657
关键词:
摘要: NdBaMn2O6 exhibits a sequence of two following magnetic transitions: second-order paramagnetic-ferromagnetic transition at TC=290 K, followed by first-order ferromagnetic-antiferromagnetic around TN=210 K, leading to normal and inverse magnetocaloric effects (MCE), respectively. For ΔB=5 T, the combined |−ΔSMmax| TC TN is found be 2.5 J/kg K 1.4 J/kgK, Moreover, presence these −ΔSM peaks spanning over broad range temperature leads remarkably wide working region, yielding significant performance in terms refrigerant efficiency. The present study demonstrates that adjusting degree A-site cation ordering perovskite oxides an efficient strategy induce room-temperature MCE.
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