GROWTH OF METAL NANO-CLUSTERS ON METAL AND OXIDE SURFACES: A RHEED STUDY

M. S. Zei
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M. S. Zei: Department of Physics, National Central University (NCU), Jungli, Taiwan

Surface Review and Letters (SRL), 2007, vol. 14, issue 04, 729-734

Abstract: The powerful RHEED technique has been demonstrated for the structural determination of the nano-crystals grown on metal and oxide substrate surfaces.Ptwas electrochemically deposited onto a$Ru(10\bar{1}0)$electrode, whilePband cobalt were vapor deposited ontoAg(111) and oxide film/NiAl(100), respectively under UHV conditions. At anyPtcoverage, 3D-clusters develop for which thePtclusters grow in (311) orientation on the$Ru(10\bar{1}0)$substrate surface, where the$[01\bar{1}]$atomic rows of the (311) facet are parallel to the$[1\bar{2}10]$atomic rows of the$Ru(10\bar{1}0)$surface. Due to the strong bonding atPb/Ag(111) interface, thePbdeposit grows in 2D-islands with a$(\sqrt{3} \times \sqrt{3})R30^{\circ}$phase (Θ

Keywords: Reflection high-energy electron diffraction (RHEED); auger electron spectroscopy; cobalt; platinum; lead; ruthenium; aluminum oxide; clusters (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0218625X07010019

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