First-principles investigation of structural and electronic properties of MgCu 2 Laves phase under pressure

Yong Liu; Wen-Cheng Hu; De-Jiang Li; Xiao-Qin Zeng; Chun-Shui Xu; Xiang-Jie Yang

doi:10.1016/j.intermet.2012.07.017

Author(s)

Yong Liu
Wen-Cheng Hu
De-Jiang Li
Xiao-Qin Zeng
Chun-Shui Xu
And 1 others

Xiang-Jie Yang

Detail(s)

Original language	English
Pages (from-to)	257-263
Journal / Publication	Intermetallics
Volume	31
Publication status	Published - Dec 2012
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.intermet.2012.07.017 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84867023694&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(1616dd14-0925-4a17-beeb-81c9a936c602).html

Abstract

The effects of pressure on the structural, electronic properties and ionic configuration of MgCu ₂ Laves phase were investigated by means of the first-principles method based on the density functional theory with generalized gradient approximation. The results for the equilibrium lattice constants are in good agreement with the previous experimental and other theoretical results. The elastic properties including the isotropic bulk modulus B, shear modulus G, Young modulus E and Poisson's ratio ν of the cubic C15-type structure MgCu ₂ were determined by using the Voigt-Reuss-Hill averaging scheme. The results show that the MgCu ₂ Laves phase is ductile according to the analysis of G/B and Cauchy pressure. The Debye temperatures obtained from the elastic stiffness constants increase with increasing pressure. Finally, the pressure-dependent behavior of density of states and ionic configuration are successfully calculated and discussed. © 2012 Elsevier Ltd. All rights reserved.

Research Area(s)

A. Laves phases, B. Elastic properties, E. Ab-initio calculations

Citation Format(s)

[ RIS ] [ BibTeX ]

First-principles investigation of structural and electronic properties of MgCu ₂ Laves phase under pressure. / Liu, Yong; Hu, Wen-Cheng; Li, De-Jiang et al.
In: Intermetallics, Vol. 31, 12.2012, p. 257-263.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Liu, Y, Hu, W-C, Li, D-J, Zeng, X-Q, Xu, C-S & Yang, X-J 2012, 'First-principles investigation of structural and electronic properties of MgCu ₂ Laves phase under pressure', Intermetallics, vol. 31, pp. 257-263. https://doi.org/10.1016/j.intermet.2012.07.017

Liu, Y., Hu, W.-C., Li, D.-J., Zeng, X.-Q., Xu, C.-S., & Yang, X.-J. (2012). First-principles investigation of structural and electronic properties of MgCu ₂ Laves phase under pressure. Intermetallics, 31, 257-263. https://doi.org/10.1016/j.intermet.2012.07.017

Liu Y, Hu WC, Li DJ, Zeng XQ, Xu CS, Yang XJ. First-principles investigation of structural and electronic properties of MgCu ₂ Laves phase under pressure. Intermetallics. 2012 Dec;31:257-263. doi: 10.1016/j.intermet.2012.07.017

Liu, Yong ; Hu, Wen-Cheng ; Li, De-Jiang et al. / First-principles investigation of structural and electronic properties of MgCu ₂ Laves phase under pressure. In: Intermetallics. 2012 ; Vol. 31. pp. 257-263.