title: Orientation-dependent work function of in situ annealed strontium titanate.
abstract: We have used energy-filtered x-ray photoelectron emission microscopy (XPEEM) and synchrotron radiation to measure the grain orientation dependence of the work function of a sintered niobium-doped strontium titanate ceramic. A significant spread in work function values is found. Grain orientation and surface reducing/oxidizing conditions are the main factors in determining the work function. Energy-filtered XPEEM looks ideally suited for analysis of other technologically interesting polycrystalline samples.
authors.affiliation: CEA DSM/IRAMIS/SPCSI, CEA Saclay, F-91191 Gif-sur-Yvette, France.
authors.forename: L F
authors.initials: LF
authors.lastname: Zagonel
authors.forename: M
authors.initials: M
authors.lastname: Bäurer
authors.forename: A
authors.initials: A
authors.lastname: Bailly
authors.forename: O
authors.initials: O
authors.lastname: Renault
authors.forename: M
authors.initials: M
authors.lastname: Hoffmann
authors.forename: S-J
authors.initials: SJ
authors.lastname: Shih
authors.forename: D
authors.initials: D
authors.lastname: Cockayne
authors.forename: N
authors.initials: N
authors.lastname: Barrett