GROWTH OF RH ON AU(111) - SURFACE INTERMIXING OF IMMISCIBLE METALS

Authors
ALTMAN EI COLTON RJ
Citation
Ei. Altman et Rj. Colton, GROWTH OF RH ON AU(111) - SURFACE INTERMIXING OF IMMISCIBLE METALS, Surface science, 304(1-2), 1994, pp. 120000400-120000406
Citations number
27
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
304
Issue
1-2
Year of publication
1994
Pages
120000400 - 120000406
Database
ISI
SICI code
0039-6028(1994)304:1-2<120000400:GOROA->2.0.ZU;2-L
Abstract
The growth of Rh on Au(111) was studied using UHV-STM and Auger electr on spectroscopy. At room temperature, Volmer-Weber cluster growth was observed as expected from the surface energies and the immiscibility o f Rh and Au below 650-degrees-C. After annealing to 400-degrees-C, the Rh Auger intensity decreased and STM revealed the formation of Au isl ands on the surface. Atomic-resolution images obtained after annealing showed a high density of defects due to Rh incorporation within the A u terraces and beneath the Au islands. The results demonstrate surface intermixing and growth by surface atom displacement and formation of substrate islands even for these immiscible systems.