Sn deposition on Ru(001) : a multitechnique surface science study

Tin deposition on the Ru(001) surface was studied by Auger electron spectroscopy (AES), low-energy electron diffraction (LEED), and low-energy ion scattering spectroscopy (LEISS). Tin deposition (AES signal intensity) versus time plots obtained over the substrate temperature (T[sub s]) range 330-670...

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Bibliographic Details
Published in:Journal of physical chemistry (1952) 1993-01, Vol.97 (3), p.690-695
Main Authors: PAFFETT, M. T, DAVID LOGAN, A, TAYLOR, T. N
Format: Article
Language:English
Subjects:
360102 > Metals & Alloys-- Structure & Phase Studies
ALLOYS
ANNEALING
Applied sciences
AUGER ELECTRON SPECTROSCOPY
COHERENT SCATTERING
Condensed matter: structure, mechanical and thermal properties
DEPOSITION
DIFFRACTION
ELECTRON DIFFRACTION
ELECTRON SPECTROSCOPY
ELEMENTS
Exact sciences and technology
GROWTH
HEAT TREATMENTS
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
LAYERS
MATERIALS SCIENCE
METALS
Metals. Metallurgy
MILLER INDICES
MOLECULAR STRUCTURE
NUCLEATION
Physics
PLATINUM METALS
RUTHENIUM
SCATTERING
Solid surfaces and solid-solid interfaces
SPECTROSCOPY
Surface structure and topography
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
TIN
TRANSITION ELEMENTS 400201 > Chemical & Physicochemical Properties
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Summary:Tin deposition on the Ru(001) surface was studied by Auger electron spectroscopy (AES), low-energy electron diffraction (LEED), and low-energy ion scattering spectroscopy (LEISS). Tin deposition (AES signal intensity) versus time plots obtained over the substrate temperature (T[sub s]) range 330-670 K indicate that the Sn adatoms exhibit several different deposition growth modes. At T[sub s] = 330 K the Sn deposition follows a Stranski-Kranstanov growth mode (uniform monolayer followed by three-dimensional growth). Two LEED patterns are seen for T[sub s] = 330 K Sn depositions that are interpreted in terms of ordered Sn overlayers in the submonolayer coverage regime. For Sn depositions at T[sub s] = 500 K the Sn overlayer growth is also approximated by a Stranski-Kranstanov growth mode with the second and subsequent layers exhibiting less three-dimensional nucleation than at 330 K. For specific Sn depositions at T[sub s] > 600 K and upon annealing to 1,000 K, ordered surfaces with ([radical]3[times][radical]3)R30[degrees] and p(2[times]2) LEED patterns are obtained depending upon initial Sn precoverages and annealing temperatures and are suggested to arise from surface alloys. LEISS data indicate that the ([radical]3[times][radical]3)R30[degrees] surface alloy has a surface SnRu atom ratio of 2:1. 30 refs., 8 figs.
ISSN:0022-3654
1541-5740
DOI:10.1021/j100105a026