Fe adatoms on Ag(100): site exchange and mobility

We present a low-energy ion scattering study of the behaviour of Fe adatoms on the Ag(100) surface. Time-of-flight spectra obtained at low temperatures have been interpreted with the simulation program match. After low-temperature deposition of Fe atoms on the Ag(100) surface, the Fe atoms occupy ad...

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Bibliographic Details
Published in:Surface science 1998-01, Vol.395 (2-3), p.131-137
Main Authors: Langelaar, M.H., Boerma, D.O.
Format: Article
Language:English
Subjects:
Adatom mobility
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Diffusion mechanism
Diffusion
interface formation
Exact sciences and technology
Growth mechanism
Low-energy ion scattering
Metals. Metallurgy
Physics
Solid surfaces and solid-solid interfaces
Surface structure
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
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Summary:We present a low-energy ion scattering study of the behaviour of Fe adatoms on the Ag(100) surface. Time-of-flight spectra obtained at low temperatures have been interpreted with the simulation program match. After low-temperature deposition of Fe atoms on the Ag(100) surface, the Fe atoms occupy adatom positions. These Fe adatoms were found to exchange sites with Ag atoms from the top layer, starting at a temperature of 130(10) K. We determined the onset temperature for the diffusion of Ag adatoms, present after exchange with Fe, to be 205(10) K, which is appreciably higher than for the case of Ag adatoms on a clean Ag(100) surface.
ISSN:0039-6028
1879-2758
DOI:10.1016/S0039-6028(97)00845-5