A geometric approach to chemical ordering in icosahedral structures

We discuss the chemical ordering of the icosahedral phases by considering the atomic local environments in physical space generated by a set of global atomic surfaces. Each kind of local environment corresponds to a ‘cell’ in the atomic surfaces. From the exploration of the cell decomposition induce...

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Bibliographic Details
Published in:Journal of non-crystalline solids 1993-02, Vol.153, p.187-195
Main Authors: Katz, A, Gratias, D
Format: Article
Language:English
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Summary:We discuss the chemical ordering of the icosahedral phases by considering the atomic local environments in physical space generated by a set of global atomic surfaces. Each kind of local environment corresponds to a ‘cell’ in the atomic surfaces. From the exploration of the cell decomposition induced by the first neighbours shell in the case of AlCuFe-type icosahedral structures, we conclude that the chemical order in these structures should also depend on the second neighbours shell.
ISSN:0022-3093
1873-4812
DOI:10.1016/0022-3093(93)90340-4