Building Principles and Structural Motifs in TiOx Ultrathin Films on a (111) Substrate

Emanuele Cavaliere, Luca Gavioli, Luca Artiglia, Gaetano Granozzi, Giovanni Barcaro, Luca Sementa, Alessandro Fortunelli

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

29 Citazioni (Scopus)

Abstract

The competition between rectangular and hexagonal phases in TiOx ultrathin (monolayer) films grown on a Pt(111) surface is discussed and rationalized on the basis of general building principles for these pseudoepitaxial oxide phases on a (111) metal substrate. A novel hexagonal reduced phase is also presented for the first time, obtained by thermal treatment at high temperature (similar to 1000 K), and its atomistic structure is unveiled through a combination of STM experiments and theoretical simulations. A consistent picture is obtained for a class of structural families for ultrathin oxide phases on close-packed single-crystal metal surfaces.
Lingua originaleEnglish
pagine (da-a)13302-13306
Numero di pagine5
RivistaJOURNAL OF PHYSICAL CHEMISTRY. C
Volume116
DOI
Stato di pubblicazionePubblicato - 2012

Keywords

  • ALLOY
  • AU(111)
  • CATALYST
  • LEED
  • NANOPARTICLES
  • PT(111)
  • STM
  • SURFACE-STRUCTURES
  • TIO2(110)
  • XPS

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