Development and characterization of an ultrathin barium oxide film on a surface oxidized Ni(110) substrate
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Vlachos, D.
Foulias, S. D.
Kamaratos, M.
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peer reviewed
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Synthesis and Reactivity in Inorganic Metal-Organic and Nano-Metal Chemistry
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In this work we develop an ultrathin barium oxide film by Ba adsorption on a pre-oxidized Ni(110) surface, and characterize it by means of Auger electron spectroscopy, low energy electron diffraction and work function measurements. The results show that the Ba adatoms reduce the NiO surface oxide forming an amorphous and incomplete BaO layer. At higher coverages, the Ba adsorbate seems to approach the metallic state, with the BaO layer confined between NiO and the metallic Ba. The measured energy decreases of the atomic Ba(75eV) and interatomic BaO(68eV) low energy Auger transition lines are analyzed in terms of low core atomic levels, valence band and extra-atomic relaxation energy changes.
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adsorption, aes energy shifts, auger electron spectroscopy, barium, barium oxide, extra-atomic relaxation energy, nickel oxide, work function, auger-electron-spectroscopy, earth metal-oxides, bao, oxygen, oxidation, pt(111), layers, h2o, co2
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<Go to ISI>://000257029000011
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en
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Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών