Stoichiometry-related Auger lineshapes in titanium oxides: Influence of valence-band profile and of Coster-Kronig processes (Articolo in rivista)

Type
Label
  • Stoichiometry-related Auger lineshapes in titanium oxides: Influence of valence-band profile and of Coster-Kronig processes (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.69.155421 (literal)
Alternative label
  • P. Le Fèvre; J. Danger; H. Magnan; D. Chandesris; J. Jupille; S. Bourgeois; M.-A. Arrio; R. Gotter; A. Verdini; A. Morgante (2004)
    Stoichiometry-related Auger lineshapes in titanium oxides: Influence of valence-band profile and of Coster-Kronig processes
    in Physical review. B, Condensed matter and materials physics (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • P. Le Fèvre; J. Danger; H. Magnan; D. Chandesris; J. Jupille; S. Bourgeois; M.-A. Arrio; R. Gotter; A. Verdini; A. Morgante (literal)
Pagina inizio
  • 155421-1 (literal)
Pagina fine
  • 155421-9 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://prb.aps.org/abstract/PRB/v69/i15/e155421 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 69 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 15 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Istituto Nazionale per la Fisica della Materia, Consiglio Nazionale delle Ricerche, UdR Tor Vergata and Dipartimento di Fisica, Università degli Studi di Roma-Tor Vergata, Via della Ricerca Scientifica 1, 00133, Roma, Italy; (2) Lab. Utilis. Rayonnement Electromag. - CNRS-Université Paris Sud; (3) Serv. Phys./Chim. Surf./Interfaces - Commissariat a l'Energie Atomique; (4) Inst. Phys./Chim. Mat. Strasbourg - CNRS-Université Louis Pasteur; (5) Groupe de Physique des Solides - CNRS-Univ. Paris VI et Paris VII; (6) Lab. Rech. Reactivite Solides - CNRS-Université de Bourgogne; (7) Lab. de Mineral.-Cristal. de Paris - CNRS-Univ. Paris VI et Paris VII; (8) Laboratorio Nazionale TASC - Inst. Naz. di Fisica della Materia (literal)
Titolo
  • Stoichiometry-related Auger lineshapes in titanium oxides: Influence of valence-band profile and of Coster-Kronig processes (literal)
Abstract
  • The ability to determine the nature and the occurrence of defects is a central need of ceramic surface chemistry. In titanium oxides, the Ti-LMV Auger decays line shape is very sensitive to the titanium degree of oxidation, and has long been empirically used as a qualitative probe of the stoichiometry. In the present work, resonant Auger and resonant valence-band measurements at the Ti-L2,3 edges in TiO2, TiO2-x and metallic titanium provide a clear evidence that the evolutions of the Ti-LMV Auger line shape are due to drastic changes in the valence-band profile and in the probability of L2L3V Coster-Kronig decay processes when a fraction of titanium ions is reduced. Both are shown to be consequences of the filling of Ti-3d states near the Fermi level on defects sites. These conclusions are confirmed by Auger-photoelectron coincidence experiments. (literal)
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