摘要
A nanocrystalline CoCrFeNiMn high-entropy alloy(nc-HEA)with nano-multiphase structure was prepared by inert gas condensation(IGC)using a laser evaporation source.Encouragingly,the laser-IGC nc-HEA exhibits unexpected ferromagnetic behavior and the Curie temperature(T_(c))increased nearly 10 times compared to any CoCrFeNiMn HEAs prepared by various other methods.In addition,the saturation magnetization(M_s)and T_(c)of the laser-IGC nc-HEA can be controlled via heat treatment,which is resulting from the formation and structural evolution of magnetic nanophases during annealing.This work widens the design toolbox for high-performance nc-HEAs based upon laser-IGC technique.
基金
the Fundamental Research Funds for the Central Universities(Nos.30919011404,30919011107)
the National Natural Science Foundation of China(Nos.51871120,51520105001,51571119)
the Natural Science Foundation of Jiangsu Province(No.BK20171425)
the support from Qing Lan project
the distinguished professor project of Jiangsu province
This research used the resources of the Advanced Photon Source,a US Department of Energy(DOE)Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory(Contract No.DE-AC02-06CH11357)。
