A Review on the Regulation of Magnetic Transitions and the Related Magnetocaloric Properties in Ni-Mn-Co-Sn Alloys  

作　　者：Zhenchen Zhong Shengcan Ma Dunhui Wang Youwei Du 

机构地区：[1]School of Material Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China [2]Department of Physics,Nanjing University,Nanjing 210093.China

出　　处：《Journal of Materials Science & Technology》2012年第3期193-199,共7页材料科学技术（英文版）

基　　金：supported by the National Basic Research Program of China (No. 2005CB623605);the National Natural Science Foundation of China (Nos. 50701022and 50831006);Jiangxi Provincial Sci&Tech Project(No. 2010AZX00200);the Program for New Century Excellent Talents of China (No. NCET-08-0278)

摘　　要：In Ni-Mn-X（X=In,Sn,Sb） ferromagnetic shape memory alloys,a ferromagnetic transition from paramagnetic to ferromagnetic austenite and a martensitic transformation from ferromagnetic austenite to weak magnetic martensite occur in some particular composition ranges,in which abundant physical properties have been observed by the abrupt change of magnetization and resistivity around their transition temperatures in these alloys.Therefore,tuning the martensitic transformation temperature（TM） and enlarging the workingtemperature interval for Ni-Mn-X（X=In,Sn,Sb） alloys,are of great importance.In the present paper,we will focus on the effect of external factors,including pre-deformation,annealing,and high pressure annealing,on the magnetic transitions and the related magnetocaloric properties in Ni-Mn-Co-Sn ferromagnetic shape memory alloys.Our approaches and the main results in this particular field will be reviewed.In Ni-Mn-X（X=In,Sn,Sb） ferromagnetic shape memory alloys,a ferromagnetic transition from paramagnetic to ferromagnetic austenite and a martensitic transformation from ferromagnetic austenite to weak magnetic martensite occur in some particular composition ranges,in which abundant physical properties have been observed by the abrupt change of magnetization and resistivity around their transition temperatures in these alloys.Therefore,tuning the martensitic transformation temperature（TM） and enlarging the workingtemperature interval for Ni-Mn-X（X=In,Sn,Sb） alloys,are of great importance.In the present paper,we will focus on the effect of external factors,including pre-deformation,annealing,and high pressure annealing,on the magnetic transitions and the related magnetocaloric properties in Ni-Mn-Co-Sn ferromagnetic shape memory alloys.Our approaches and the main results in this particular field will be reviewed.

关 键 词：Martensitic transformation Magnetocaloric properties Pre-deformation Annealing High pressure annealing 

分 类 号：TG146.14[一般工业技术—材料科学与工程] TB64[金属学及工艺—金属材料]