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张敏刚,李少波,陈峰华,张稳,郭艳萍,李凡.Ni50-xCoxMn39Sn11(x = 0-8)合金薄带的微观结构,马氏体相变和磁热性质研究[J].稀有金属材料与工程(英文),2019,48(5):1394~1400.[zhangmingang,lishaobo,chenfenghua,zhangwen,guoyanping and lifan.Microstructure, martensitic transformation and magne-tocaloric effect of Ni50-xCoxMn39Sn11(x = 0-8) Heusler alloy ribbons[J].Rare Metal Materials and Engineering,2019,48(5):1394~1400.]
Microstructure, martensitic transformation and magne-tocaloric effect of Ni50-xCoxMn39Sn11(x = 0-8) Heusler alloy ribbons
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Received:March 17, 2018  Revised:April 03, 2018
DOI:
Key words: Ni-Co-Mn-Sn alloy  martensitic transformation  magnetocaloric effect  magnetic entropy change
Foundation item:山西省重点学科建设经费;山西省海归专业人员科学活动基金项目;山西先进永磁材料与技术协同创新中心项目(2016-09);山西省研究生联合培养基地人才培养项(2016JD36);山西科技创新重点团队资助项目(2013131009);山西省回国留学人员科研资助项目(2013-098,2016-092)
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zhangmingang,lishaobo,chenfenghua,zhangwen,guoyanping and lifan  
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Abstract:
      Abstract: A series of Ni50-xCoxMn39Sn11 (x = 0-8) alloy ribbons were prepared by a single-roll melt spinning method and its crystal structure, phase transition, and magnetocaloric effect are investigated. The martensitic transformation temperatures decrease rapidly and the Curie temperature of austenitic phase increases monotonously with the substitution of Ni by Co. The structural transformation can be induced not only by the temperature, but also by the magnetic field. Under field change of 30 kOe, we get large magnetic entropy change and refrigerant capacity in the heating process and cooling process with much lower hysteresis loss.