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Bonding network and stability of clusters: the case study of Al13TM4 pseudo‐tenfold surfaces.

Authors :
Scheid, Philippe
Chatelier, Corentin
Ledieu, Julian
Fournée, Vincent
Gaudry, Émilie
Source :
Acta Crystallographica. Section A, Foundations & Advances. Mar2019, Vol. 75 Issue 2, p314-324. 11p.
Publication Year :
2019

Abstract

Clusters, i.e. polyhedral geometric entities, are widely used to describe the structure of complex intermetallic compounds. However, little is generally known about their physical significance. The atomic and electronic structures of the Al13TM4 complex intermetallic compounds (TM = Fe, Co, Ru, Rh) have been investigated using a wide range of ab initio tools in order to examine the influence of the chemical composition on the pertinence of the bulk structure description based on 3D clusters. In addition, since surface studies were found to be a relevant approach to address the question of cluster stability in complex phases, the interplay of the cluster substructure with the 2D surface is addressed in the case of the Al13Co4(100) and Al13Fe4(010) surfaces. The physical significance of clusters in Al13TM4 compounds is invesitgated through ab initio methods based on density functional theory. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20532733
Volume :
75
Issue :
2
Database :
Academic Search Index
Journal :
Acta Crystallographica. Section A, Foundations & Advances
Publication Type :
Academic Journal
Accession number :
135020330
Full Text :
https://doi.org/10.1107/S2053273319000202