凝聚态物理
磁性形状记忆合金
铁磁性
材料科学
形状记忆合金
磁场
磁化
磁制冷
居里温度
物理
磁存储器
磁畴
作者
C. L. Zhang,W.Q. Zou,Haicheng Xuan,Zhida Han,Danqing Wang,Benxi Gu,Y.W. Du
标识
DOI:10.1088/0022-3727/40/23/005
摘要
A series of Ni45Mn44−xCrxSn11 (x = 0, 1, 2) ferromagnetic shape memory alloys were prepared. With slight doping of Cr, the martensitic transition temperatures decrease rapidly. The magnetic entropy changes at a low magnetic field were investigated in these alloys. The maximum value of ΔSM is 23.4 J kg−1 K−1, which was observed in Ni45Mn43CrSn11 alloys. The origin of the magnetic entropy changes in these alloys has been discussed. The giant low-field magnetic entropy changes and low cost make Ni45Mn44−xCrxSn11 alloys a promising candidate for magnetic refrigeration.
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