Scheid P, Chatelier C, Ledieu J, Fournée V, Gaudry É. Bonding network and stability of clusters: the case study of Al
13TM
4 pseudo-tenfold surfaces.
Acta Crystallogr A Found Adv 2019;
75:314-324. [PMID:
30821264 PMCID:
PMC6396397 DOI:
10.1107/s2053273319000202]
[Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 01/04/2019] [Indexed: 11/10/2022] Open
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.
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