Antiferromagnetism and Phase Stability of CrMnFeCoNi High-Entropy Alloy

Li Zhu; Haiyan He; Muhammad Naeem; Xun Sun; Ji Qi; Peng Liu; Stefanus Harjo; Kenji Nakajima; Bing Li; Xun-Li Wang

doi:10.1103/PhysRevLett.133.126701

Author(s)

Li Zhu
Xun Sun
Ji Qi
Peng Liu
Stefanus Harjo
Kenji Nakajima
Bing Li

Related Research Unit(s)

Detail(s)

Original language	English
Article number	126701
Journal / Publication	Physical Review Letters
Volume	133
Issue number	12
Online published	17 Sept 2024
Publication status	Published - 20 Sept 2024

Link(s)

DOI	DOI https://doi.org/10.1103/PhysRevLett.133.126701 Final Published version
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Attachment(s)	Documents 248942630.pdf Final Published version, 412 KB, PDF Publisher's Copyright Statement COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: Zhu, L., He, H., Naeem, M., Sun, X., Qi, J., Liu, P., Harjo, S., Nakajima, K., Li, B., & Wang, X.-L. (2024). Antiferromagnetism and Phase Stability of CrMnFeCoNi High-Entropy Alloy. Physical Review Letters, 133(12), Article 126701. https://doi.org/10.1103/PhysRevLett.133.126701 The copyright of this article is owned by American Physical Society.
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85204470250&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(ecb4d470-ce6c-442b-8229-343411bd0e98).html

Abstract

It has long been suspected that magnetism could play a vital role in the phase stability of multicomponent high-entropy alloys. However, the nature of the magnetic order, if any, has remained elusive. Here, by using elastic and inelastic neutron scattering, we demonstrate evidence of antiferromagnetic order below ∼80 K and strong spin fluctuations persisting to room temperature in a single-phase face-centered cubic (fcc) CrMnFeCoNi high-entropy alloy. Despite the chemical complexity, the magnetic structure in CrMnFeCoNi can be described as γ-Mn-like, with the magnetic moments confined in alternating (001) planes and pointing toward the "111" direction. Combined with first-principles calculation results, it is shown that the antiferromagnetic order and spin fluctuations help stabilized the fcc phase in CrMnFeCoNi high-entropy alloy. © 2024 American Physical Society.