The superior properties of high-entropy multi-functional materials are strongly connected with their atomic heterogeneity through many different local atomic interactions. The detailed element-specific studies on a local scale can provide insight into the primary arrangements of atoms in multicomponent systems and benefit to unravel the role of individual components in certain macroscopic properties of complex compounds. Herein, multi-edge X-ray absorption spectroscopy combined with reverse Monte Carlo simulations was used to explore a homogeneity of the local crystallographic ordering and specific structure relaxations of each constituent in the equiatomic single-phase face-centered cubic CrMnFeCoNi high-entropy alloy at room temperature. Within the considered fitting approach, all five elements of the alloy were found to be distributed at the nodes of the fcc lattice without any signatures of the additional phases at the atomic scale and exhibit very close statistically averaged interatomic distances (2.54 – 2.55 Å) with their nearest-neighbors. Enlarged structural displacements were found solely for Cr atoms. The macroscopic magnetic properties probed by conventional magnetometry demonstrate no opening of the hysteresis loops at 5 K and illustrate a complex character of the long-range magnetic order after field-assisted cooling in± 5 T. The observed magnetic behavior is assigned to effects related to structural relaxations of Cr. Besides, the advantages and limitations of the reverse Monte Carlo approach to studies of multicomponent systems like high-entropy alloys are highlighted.

高熵多功能材料的优越性能通过许多不同的局部原子相互作用与其原子异质性密切相关。在局部尺度上进行详细的特定元素研究可以深入了解多组分系统中原子的主要排列，并有助于揭示单个组分在复杂化合物的某些宏观性质中的作用。在此，多棱 X 射线吸收光谱结合反向蒙特卡罗模拟用于探索等原子单相面心立方 CrMnFeCoNi 高熵合金中各成分的局部晶体有序性和特定结构弛豫的均匀性。室内温度。在考虑的拟合方法中，发现合金的所有五种元素都分布在 fcc 晶格的节点上，在原子尺度上没有任何附加相的特征，并且与最近的邻居表现出非常接近的统计平均原子间距离 (2.54 – 2.55 Å)。仅针对 Cr 原子发现了扩大的结构位移。通过常规磁力测量法探测的宏观磁性表明在 5 K 时磁滞回线没有打开，并说明了在± 5 T 的场辅助冷却后长程磁序的复杂特征。观察到的磁行为被分配给与相关的效应Cr的结构弛豫。此外，还强调了逆蒙特卡罗方法在高熵合金等多组分系统研究中的优势和局限性。