Magnetic properties of CrFeCoNi based high entory alloy

Monte Carlo simulations are performed on three high entropy alloys: Cr 0.25 Fe 0.25 Co 0.25 Ni 0.25 , Cr 0.2 Fe 0.2 Co 0.2 Ni 0.2 Pd 0.2 , and Cr 0.2 Mn 0.2 Fe 0.2 Co 0.2 Ni 0.2 , with exchange interactions extracted from The ab initio Korringa-Kohn-Rostoker method combined with the coherent potenti...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-11, Vol.2122 (1), p.12004
Main Authors: Yin, Junqi, Eisenbach, Markus, Daene, Makrus, Malcolm Stocks, G.
Format: Article
Language:English
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Summary:Monte Carlo simulations are performed on three high entropy alloys: Cr 0.25 Fe 0.25 Co 0.25 Ni 0.25 , Cr 0.2 Fe 0.2 Co 0.2 Ni 0.2 Pd 0.2 , and Cr 0.2 Mn 0.2 Fe 0.2 Co 0.2 Ni 0.2 , with exchange interactions extracted from The ab initio Korringa-Kohn-Rostoker method combined with the coherent potential approximation calculations. Using finite size scaling analyses, we estimate the magnetic phase transition temperature for the four component alloy to be 108(2) K, and although the individual critical exponents are different from 3D Heisenberg universality class, the reduced exponent follows Suzuki weak universality. With the additional Palladium component, the transition temperature elevates to about 200 K. In contrast, we find no magnetic order for the five component alloy with Manganese at any finite temperatures.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2122/1/012004