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Nanocrystalline CoCrFeNiMn high-entropy alloy with tunable ferromagnetic properties
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DOI：10.1016/j.jmst.2020.10.060.png)
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Abstract
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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. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
Keywords:
Magnetic
Nanocrystalline high-entropy alloy
Laser-Inert gas condensation
Microstructure
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