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

Journal Article · Thu Jan 21 04:00:00 EST 1993 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100105a026· OSTI ID:6200800

Paffett, M T; Logan, A D; Taylor, T N ^[1]

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1. Los Alamos National Lab., NM (United States)

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.

• OSTI ID: 6200800
• Journal Information: Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 97:3; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALLOYS
ANNEALING
AUGER ELECTRON SPECTROSCOPY
COHERENT SCATTERING
DEPOSITION
DIFFRACTION
ELECTRON DIFFRACTION
ELECTRON SPECTROSCOPY
ELEMENTS
GROWTH
HEAT TREATMENTS
LAYERS
METALS
MILLER INDICES
MOLECULAR STRUCTURE
NUCLEATION
PLATINUM METALS
RUTHENIUM
SCATTERING
SPECTROSCOPY
TIN
TRANSITION ELEMENTS