Paper Title:
Oxygen-Induced Formation of Nanopyramids on W(111)
  Abstract

In this study, we investigated the role of oxygen in the faceting of the W(111) surface at temperatures close to T = 2000°C. For that purpose, we characterized the W(111) surface before and after the annealing step by low energy electron diffraction (LEED), reflection high energy electron diffraction (RHEED), scanning tunneling microscopy (STM), and Auger electron spectroscopy (AES). It is found that W(111) undergoes a massive reconstruction to form three sided pyramids of nanometer dimensions with mainly {211} planes as facet sides. Interestingly, the facetted W(111) surface is deprived from oxygen. We then show how the facetted W(111) surface can be used as a template to deposit platinum by molecular beam epitaxy.

  Info
Periodical
Chapter
Chapter I: Materials and Elaboration Techniques
Edited by
Maher Soueidan, Mohamad Roumié and Pierre Masri
Pages
109-112
DOI
10.4028/www.scientific.net/AMR.324.109
Citation
M. El-Jawad, B. Gilles, F. Maillard, "Oxygen-Induced Formation of Nanopyramids on W(111)", Advanced Materials Research, Vol. 324, pp. 109-112, 2011
Online since
August 2011
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Price
$32.00
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