Giant low-field magnetic entropy changes in Ni45Mn44?xCrxSn11 ferromagnetic shape memory alloys
作者： C L Zhang , W Q Zou , H C Xuan , Z D Han , D H Wang
DOI: 10.1088/0022-3727/40/23/005
关键词: Ferromagnetism 、 Doping 、 Entropy (information theory) 、 Low magnetic field 、 Martensite 、 Magnetic refrigeration 、 Shape-memory alloy 、 Magnetic shape-memory alloy 、 Condensed matter physics 、 Materials science
摘要: A series of Ni45Mn44−xCrxSn11 (x = 0, 1, 2) ferromagnetic shape memory alloys were prepared. With slight doping Cr, the martensitic transition temperatures decrease rapidly. The magnetic entropy changes at a low field investigated in these alloys. maximum value ΔSM is 23.4 J kg−1 K−1, which was observed Ni45Mn43CrSn11 origin has been discussed. giant low-field and cost make promising candidate for refrigeration.
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