Ultrathin wagon-wheel-like TiOx phases on Pt(111): A combined low-energy electron diffraction and scanning tunneling microscopy investigation (Articolo in rivista)

Type
Label
  • Ultrathin wagon-wheel-like TiOx phases on Pt(111): A combined low-energy electron diffraction and scanning tunneling microscopy investigation (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Sedona, F; Agnoli, S; Granozzi, G (2006)
    Ultrathin wagon-wheel-like TiOx phases on Pt(111): A combined low-energy electron diffraction and scanning tunneling microscopy investigation
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Sedona, F; Agnoli, S; Granozzi, G (literal)
Pagina inizio
  • 15359 (literal)
Pagina fine
  • 15367 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 110 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Padua, Dipartimento Sci Chim, I-35131 Padua, Italy; Univ Padua, INFM, CNR, Unita Ricerca, I-35131 Padua, Italy; Univ Padua, INSTM, I-35131 Padua, Italy (literal)
Titolo
  • Ultrathin wagon-wheel-like TiOx phases on Pt(111): A combined low-energy electron diffraction and scanning tunneling microscopy investigation (literal)
Abstract
  • Ultrathin ordered titanium oxide films on a Pt( 111) surface have been prepared by reactive deposition and characterized by low-energy electron diffraction and scanning tunneling microscopy (STM). According to the postdeposition annealing condition, three different phases have been prepared which show a wagon-wheel-like ( hereafter ww) morphological pattern. Two of them can be prepared as single phases (w- and w'-TiOx) and one (w(int)-TiOx) as a mixed phase which always coexists with at least one of the other two phases. All of them are formed by a Ti-O bilayer, where the Ti atoms are located at the interface with the substrate, but they show a rather distinct STM ww pattern. The experimental STM contrast has been discussed on the basis of a Moire-like model, i.e., as deriving from a modulation of the Ti occupancy of the different substrate sites (i.e., hollow, bridge and on-top sites). The major part of the STM data can be easily interpreted on the basis of this simplified model. (literal)
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