title: In situ growth of epitaxial cerium tungstate (100) thin films.
abstract: The deposition of ceria on a preoxidized W(110) crystal at 870 K has been studied in situ by photoelectron spectroscopy and low-energy electron diffraction. Formation of an epitaxial layer of crystalline cerium tungstate Ce(6)WO(12)(100), with the metals in the Ce(3+) and W(6+) chemical states, has been observed. The interface between the tungsten substrate and the tungstate film consists of WO suboxide. At thicknesses above 0.89 nm, cerium dioxide grows on the surface of Ce(6)WO(12), favoured by the limited diffusion of tungsten from the substrate.
authors.affiliation: Sincrotrone Trieste SCpA, Strada Statale 14, km 163.5, I-34149 Basovizza, Trieste, Italy. tomas.skala@elettra.trieste.it
authors.forename: Tomáš
authors.initials: T
authors.lastname: Skála
authors.forename: Nataliya
authors.initials: N
authors.lastname: Tsud
authors.forename: Miguel Ángel Niño
authors.initials: MÁ
authors.lastname: Orti
authors.forename: Tevfik Onur
authors.initials: TO
authors.lastname: Menteş
authors.forename: Andrea
authors.initials: A
authors.lastname: Locatelli
authors.forename: Kevin Charles
authors.initials: KC
authors.lastname: Prince
authors.forename: Vladimír
authors.initials: V
authors.lastname: Matolín