Open AccessMagnetic properties of CrFeCoNi based high entory alloy
Author(s) -
Junqi Yin,
Markus Eisenbach,
Makrus Daene,
G. Malcolm Stocks
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2122/1/012004
Subject(s) - alloy , condensed matter physics , scaling , exponent , monte carlo method , critical exponent , universality (dynamical systems) , coherent potential approximation , ab initio , renormalization group , materials science , thermodynamics , phase transition , chemistry , physics , mathematics , metallurgy , quantum mechanics , electronic structure , linguistics , philosophy , geometry , statistics
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.