摘要
采用熔体快淬工艺制备了Ni_(50-x)Co_xMn_(39)Sn_(11)(x=5, 6, 7, 8)成分的合金薄带,研究了合金的相转变温度和磁电阻效应。随着Co元素由5%增加到8%,马氏体相变温度由340 K降低到225 K,同时奥氏体居里温度由360 K升高到400K,奥氏体相稳定性增强。在30kOe外场下,合金磁电阻比随着Co含量的增加逐渐增大,对应温度区间变宽,其中Ni42Co8Mn39Sn11合金在275 K附近磁电阻比达到了25%。实验结果表面Ni_(50-x)Co_xMn_(39)Sn_(11)Sn_(11)系列合金在传感器方面有很好的应用前景。
A series of Ni50-xCoxMn39Sn11 Sn11(x=5-8)alloy ribbons were prepared by single-roll melt spinning method and its phase transition and magnetoresistance were investigated.With increasing Co from 5%to 8%,the martensitic transformation temperatures decrease from 340 K to 225 K rapidly and the Curie temperature of austenitic phase increases monotonously from 360 K to 400 K.The stability of austenite is enhanced simultaneously.The magnetoresistance of Ni50-xCoxMn39Sn11 Sn11 alloy increases with the increase of Co content.In Ni42Co8Mn39Sn11 alloy,a large magnetoresistance of25%is observed for the field change of 30 kOe at 275 K.Experimental results show that the Ni50-xCoxMn39Sn11Sn11 series alloys has a promising application in sensors.
作者
张敏刚
李少波
陈峰华
李帆
王玲
ZHANG Min-gang;LI Shao-bo;CHEN Feng-hua;LI Fan;WANG Ling(Institute of Advanced Materials,School of Materials Science and Engineering,Taiyuan University ofScience and Technology,Taiyuan 030024,China)
出处
《磁性材料及器件》
CAS
CSCD
2019年第1期1-4,8,共5页
Journal of Magnetic Materials and Devices
基金
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目(2016JD36)
山西省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)
山西省重点学科建设经费资助项目
