Magnetic-field-driven reverse martensitic transformation with multiple magneto-responsive effects by manipulating magnetic ordering in Fe-doped Co-V-Ga Heusler alloys  

作　　者：Kai Liu Shengcan Ma Yuxi Zhang Hai Zeng Guang Yu Xiaohua Luo Changcai Chen Sajjad Ur Rehman Yongfeng Hu Zhenchen Zhong 

机构地区：[1]Jiangxi Key Laboratory for Rare Earth Magnetic Materials and Devices/Institute for Rare Earth Magnetic Materials and Devices(IREMMD),Jiangxi University of Science and Technology,Ganzhou 341000,China [2]School of Materials Science and Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China [3]Canadian Light Source,University of Saskatchewan,Saskatoon,Saskatchewan S7N 2V3,Canada

出　　处：《Journal of Materials Science & Technology》2020年第23期145-154,共10页材料科学技术（英文版）

基　　金：financially supported by the Key Project of Natural Science Foundation of Jiangxi Province(No.20192ACB20004);the National Natural Science Foundation of China(No.51671097);the Open Project awarded by National Key Laboratory State Microstructures Physics(No.M32037)。

摘　　要：Nowadays,searching for the materials with multiple magneto-functional properties and good mechanical properties is vital in various fields,such as solid-state refrigeration,magnetic actuators,magnetic sensors and intelligent/smart devices.In this work,the magnetic-field-induced metamagnetic reverse martensitic transformation(MFIRMT)from paramagnetic martensite to ferromagnetic austenite with multiple magneto-responsive effects is realized in Fe-doped Co-V-Ga Heusler alloys by manipulating the magnetic ordering.The martensitic transformation temperature Tmreduces quasi-linearly with increasing Fe-content.In strikingly contrast with the Fe-free alloys,the magnetization difference(M')across martensitic transformation increases by three orders of magnitude for Fe-doped alloys.The increased M'should be ascribed to the reduction of Tm,almost unchanged Curie temperature of austenite and the increased magnetic moment in the samples with higher Fe-content.The large M'provides strong driving force to realize the MFIRMT and accordingly multiple magneto-responsive effects,such as magnetocaloric,magnetoresistance and magnetostriction effects.Meanwhile,giant Vickers hardness of 518 HV and compressive strength of 1423 MPa are achieved.Multiple magneto-responsive effects with exceptional mechanical properties make these alloys great potential candidates for applications in many fields.

关 键 词：Magneto-functional properties Mechanical properties Ferromagnetic ordering Reverse martensitic transformation Multiple magneto-responsive effects Co-based Heusler alloys 

分 类 号：TG132.27[一般工业技术—材料科学与工程]