Experimental and simulation study of microstructure and magnetic properties of (AlFeMnNi)1−x Nd x

IF 1.5 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Philosophical Magazine Pub Date : 2023-04-12 DOI:10.1080/14786435.2023.2193911

A. Abjaou, R. Masrour, E. Hlil

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Abstract

ABSTRACT The high-entropy alloy (Al25Fe30Mn25Ni20)1−x Nd x (all in at.%) (AlFeMnNi)1−x Nd x ) was prepared by vacuum arc melting (AM) and casting method (CM). X-Ray Diffraction (XRD) and Scanning Electron Microscopy, transmission electron microscope and Integrated Energy-Dispersive X-ray spectroscopy were used to study the structure of our system. The (Al25Fe30Mn25Ni20)1−x Nd x crystallises in a Face-centred cube and centred cubic (BCC), depending on the x (x = 0.00, x = 0.01 at.% Nd). The increase of Neodymium (0.01 at.% Nd) content results in the formation of BCC structure. The chemical composition analysis of FCC and BCC crystal structures, their lattice constants demonstrate that the formation of a single BCC solid solution between 760°C and 1480°C. The Korringa–Kohn–Rostoker Method and Green's function combined with coherent potential approximation were used to study the magnetoelectronic properties of (Al25Fe30Mn25Ni20)1−x Nd x . We have obtained the value optimised of lattice parameter 2.9 Å and it is near to that obtained by experimental value using High Score programme and results XRD experimental.

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(AlFeMnNi)1−x Nd的微观结构和磁性能的实验与模拟研究

摘要:采用真空电弧熔炼(AM)和铸造(CM)法制备了高熵合金(Al25Fe30Mn25Ni20)1−x Nd x(均为at.%) (AlFeMnNi)1−x Nd x)。利用x射线衍射仪(XRD)、扫描电镜、透射电镜和集成能量色散x射线能谱对体系的结构进行了研究。(Al25Fe30Mn25Ni20)1−x Nd x的晶态随x (x = 0.00, x = 0.01 at)的变化呈面心立方和心立方(BCC)状。% Nd)。钕的增加(0.01 at)。% Nd)含量导致BCC结构的形成。FCC和BCC晶体结构的化学成分分析和晶格常数表明，在760 ~ 1480℃之间形成单一的BCC固溶体。采用Korringa-Kohn-Rostoker方法和格林函数结合相干势近似研究了(Al25Fe30Mn25Ni20)1−x Nd x的磁电子性质。利用High Score程序和XRD实验结果，我们得到了优化后的晶格参数值2.9 Å，与实验值接近。

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来源期刊

Philosophical Magazine 工程技术-材料科学：综合

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审稿时长

4.7 months

期刊介绍： The Editors of Philosophical Magazine consider for publication contributions describing original experimental and theoretical results, computational simulations and concepts relating to the structure and properties of condensed matter. The submission of papers on novel measurements, phases, phenomena, and new types of material is encouraged.