Electron spin mediated distortion in metallic systems

SCRIPTA MATERIALIA

卷:185

Article

Anand, G.^1,2,3  Eisenbach, Markus⁴  Goodall, Russell²  Freeman, Colin L.² 

[1] Indian Inst Engn Sci & Technol Shibpur, Dept Met & Mat Engn, Howrah, WB, India

[2] Univ Sheffield, Dept Mat Sci & Engn, Sheffield, S Yorkshire, England

[3] Univ Warwick, Warwick Ctr Predict Modelling, Coventry, W Midlands, England

[4] Oak Ridge Natl Lab, Ctr Computat Sci, Sci Comp Grp, Oak Ridge, TN USA

关键词: High entropy alloys;    Distortion;    Alloys;    Solid solution strengthening;    Magnetism;   

DOI  :  10.1016/j.scriptamat.2020.04.025

来源: Elsevier

【 摘 要 】

The deviation of positions of atoms from their ideal lattice sites in crystalline solid state systems causes distortion and it causes variation in structural [1] and functional properties [2]. Severe lattice distortion has been proposed to be one of the core-effect in high-entropy alloys. But the fundamental mechanism of distortion at atomic scale is missing for real three-dimensional metallic systems. The present investigation aims to develop mechanistic understanding of atomic scale distortion in metallic systems in terms of the magneto-volume effects. The correlation between charge-disproportion, spin fluctuations, magneto-volume effects and Fermi surface nesting has been highlighted. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd.

【 授权许可】

Free