A magnetocaloric effect arising from a ferromagnetic transition in the martensitic state in Heusler alloy of Ni50Mn36Sb8Ga6

作者：Tian, Fanghua; Zeng, Yuyang; Xu, Minwei; Yang, Sen^*; Lu, Tao; Wang, Jieqiong; Chang, Tieyan; Adil, Murtaza; Zhang, Yin; Zhou, Chao; Song, Xiaoping

来源：Applied Physics Letters, 2015, 107(1): 012406.

DOI：10.1063/1.4926411

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• CRYSTAL

We report a magnetocaloric effect with nearly zero thermal hysteresis in Heusler alloy of Ni50Mn36Sb8Ga6 around room temperature due to a ferromagnetic transition in martensitic state (FTMS). The refrigerant capacity value of this ferromagnetic transition in the vicinity of onset temperature T-M(C) can arrive at 163.8 J/kg, much higher than that of first-order magnetically martensitic transition in the same alloy. Such a magnetocaloric effect in FTMS is attributed to a second-order (or a weak first-order) transition from an antiferromagnetic phase with modulated 7M orthorhombic structure to a ferromagnetic phase with modulated 4O orthorhombic structure.

• 出版日期2015-7-6
• 单位西安交通大学