Abstract
Monte Carlo simulations are performed on three high entropy alloys: Cr0.25Fe0.25Co0.25Ni0.25, Cr0.2Fe0.2Co0.2Ni0.2Pd0.2, and Cr0.2Mn0.2Fe0.2Co0.2Ni0.2, 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.
Original language | English |
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Article number | 012004 |
Journal | Journal of Physics: Conference Series |
Volume | 2122 |
Issue number | 1 |
DOIs | |
State | Published - Dec 9 2021 |
Event | 32nd Annual CSP Workshop on Recent Developments in Computer Simulation Studies in Condensed Matter Physics, CSP 2019 - Athens, Georgia Duration: Feb 18 2019 → Feb 22 2019 |
Funding
Acknowledgments This work was sponsored by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering Division. This research used resources of Oak Ridge National Laboratory’s Compute and Data Environment for Science (CADES) and the Oak Ridge Leadership Computing Facility, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC05-00OR22725.