SURFACE PHASE-DIAGRAM AND SURFACE STRAIN-ENERGY ON CUAG(111) ALLOY

Authors
MOSSER A JOUAITI A
Citation
A. Mosser et A. Jouaiti, SURFACE PHASE-DIAGRAM AND SURFACE STRAIN-ENERGY ON CUAG(111) ALLOY, Surface science, 304(1-2), 1994, pp. 120000427-120000430
Citations number
10
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
304
Issue
1-2
Year of publication
1994
Pages
120000427 - 120000430
Database
ISI
SICI code
0039-6028(1994)304:1-2<120000427:SPASSO>2.0.ZU;2-G
Abstract
It is shown that, considering the size difference between the silver a nd copper atoms, it is necessary for the interpretation of the segrega tion experiments, to take into account the surface strain energy which occurs in the first layer when the silver atoms segregate at the surf ace. With these conditions, it is possible to fit the experimental sur face phase diagram, and to derive the constant segregation energy and the surface size misfit segregation energy. Besides, we have shown tha t (111) surface transitions occur only when the bulk concentration is lower than 0.32 at%.