DIFFUSION BY ATOMIC PLACE EXCHANGE IN ULTRATHIN IRON FILMS ON AG(100)- AN ION-SCATTERING SPECTROSCOPY STUDY

Authors
CANEPA M MAGNANO E CAMPORA A CANTINI P SALVIETTI M MATTERA L
Citation
M. Canepa et al., DIFFUSION BY ATOMIC PLACE EXCHANGE IN ULTRATHIN IRON FILMS ON AG(100)- AN ION-SCATTERING SPECTROSCOPY STUDY, Surface science, 352, 1996, pp. 36-40
Citations number
35
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
352
Year of publication
1996
Pages
36 - 40
Database
ISI
SICI code
0039-6028(1996)352:<36:DBAPEI>2.0.ZU;2-W
Abstract
The surface composition of ultrathin (0-10 ML) iron films deposited on a well defined Ag(100) substrate at 140 K has been investigated by io n scattering spectroscopy. The data unambiguously show the occurrence of intermixing. The concentration of Ag at the surface decreases rathe r rapidly with the film thickness but it is still relevant (similar to 10%) even in the case of the thickest layer. The data are interpreted in terms of an atomic place exchange between silver and incident iron atoms at the surface of the growing film.