Effect of Electron Irradiation on Electronic Structure of Ni41Co6Mn43Sn10 Alloys

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Electronic Materials Letters Pub Date : 2023-05-08 DOI:10.1007/s13391-023-00432-5

Sibo Sun, Jun Zhang, Zhiyong Gao, Wei Cai

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Abstract

Effect of electron irradiation on electronic structure of Ni₄₁Co₆Mn₄₃Sn₁₀ alloys were investigated by X-ray absorption fine structure, X-ray magnetic circular dichroism spectrometry and Mössbauer spectrometry. The local coordination environment of magnetic element significant changes after electron irradiation, the change in the peak intensity of the Co L₃ edge is opposite to the Ni/Mn element, indicating that there is an electronic exchange between them. The crystal field symmetry is broken, the hyperfine field H_in of the Ni₄₁Co₆Mn₄₃Sn₁₀ alloy increases from 8.80 to 9.06 T. Meanwhile, the spin magnetic moment of the Mn atom is significantly increased after electron irradiation.

Graphical Abstract

MCD, XAS spectra of Ni and Mn and Hyperfine field distribution of Ni₄₁Co₆Mn₄₃Sn₁₀ alloys before and after electron irradiation

Abstract Image

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电子辐照对Ni_41Co_6Mn_43Sn_10合金电子结构的影响

通过X射线吸收精细结构、X射线磁性圆二色光谱和莫斯鲍尔光谱研究了电子辐照对Ni41Co6Mn43Sn10合金电子结构的影响。电子辐照后磁性元素的局部配位环境发生了显著变化，Co L3 边峰强度的变化与 Ni/Mn 元素相反，表明它们之间存在电子交换。同时，电子辐照后锰原子的自旋磁矩显著增加。图文摘要电子辐照前后Ni41Co6Mn43Sn10合金的MCD、XAS谱图和超细场分布

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来源期刊

Electronic Materials Letters 工程技术-材料科学：综合

CiteScore

4.70

自引率

20.80%

发文量

审稿时长

2.3 months

期刊介绍： Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.