Journal: Surface Science

Abbreviation

Surf. Sci.

Publisher

Elsevier

Journal Volumes

ISSN

1879-2758
0039-6028

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Publications 1 - 10 of 38
  • Magnetic properties of epitaxial Fe films on MnPt/Fe(1 0 0)
    Item type: Conference Paper
    Fujii, Jun; Borgatti, Francesco; Panaccione, Giancarlo; et al. (2007)
    Surface Science
    Magnetic properties of epitaxial Fe films on MnPt/Fe(1 0 0) were measured using X-ray magnetic circular dichroism (XMCD) and Mott electron spin polarimetry (SP). Surface sensitive secondary electron spin polarization images revealed the magnetization orientation of the Fe overlayers with respect to that of the substrate Fe crystal that was measured with bulk-sensitive XMCD. The magnetic domains of the Fe overlayer are influenced by the substrate magnetic domain structure, giving a clear evidence of the magnetic interaction between the Fe overlayer and the substrate Fe through the antiferromagnetic MnPt film.
  • Living on the edge
    Item type: Journal Article
    Treier, Matthias; Ruffieux, Pascal; Schillinger, Richard; et al. (2008)
    Surface Science
  • Oxygen-induced surface faceting of the threefold-symmetry surface of icosahedral AlPdMn quasicrystal
    Item type: Journal Article
    Burkardt, S.; Erbudak, M. (2009)
    Surface Science
  • DFT modeling of the hydrolysis of isocyanic acid over the TiO2 anatase (101) surface
    Item type: Journal Article
    Czekaj, Izabela; Piazzesi, Gaia; Kroecher, Oliver; et al. (2006)
    Surface Science
  • Hard X-ray photoelectron spectroscopy reveals self-organized structures of electrocatalytic nickel oxy-hydroxides
    Item type: Journal Article
    Longo, Filippo; Billeter, Emanuel; Kazaz, Selim; et al. (2024)
    Surface Science
    Alkaline water electrolysis represents one of the simplest methods employed for renewable hydrogen production, reaching high conversion efficiency utilizing cheap and abundant transition metals such as nickel and its alloys. The outstanding properties of Ni-materials do not arise from the metallic host, rather from the surface passivated with various oxidized compounds formed during the electrochemical process. This newly formed layer is responsible for the catalytic properties of the system, therefore the investigation of its evolution as function of potential and time is crucial for a deeper understanding of the overall electrochemical process. However, the characterization of the chemical environment at the topmost layer, as well as the underlying layers, is complex and requires surface sensitive techniques. Here, we show that while ambient pressure soft X-ray photoelectron spectroscopy (APXPS) allows to follow the changes of the topmost layer, characterization of the deeper layers modifications occurring during electrocatalysis requires a combination of soft- and hard X-ray photoelectron spectroscopy (XPS/HAXPES), coupled with electrochemical impedance spectroscopy (EIS). The findings show how the high electrocatalytic activity of Ni (oxy)-hydroxides is directly related to the increasing water intercalation into the passivation layer, which supports the long-debated hypothesis of a water mediated OH− diffusion mechanism. High performance of the electrode is promoted by the peculiar structure of the surface, which self-organizes during the initial formation of the passivation layer enabling self-healing during electro-catalysis. Ultimately, we show how the investigation at different depths by means of XPS/HAXPES in combination with EIS allows a better understanding of the chemical changes occurring throughout the passivation layer, signaling a paradigm shift from the traditional explanation of electro-catalysis by a simple electrode material with a stable nanostructure, to a concept leaning towards a dynamic electrochemical interface.
  • Adsorption of CO2 on K-promoted Cu(111) surfaces
    Item type: Journal Article
    Hadenfeldt, Sven; Benndorf, Carsten; Stricker, Andrea; et al. (1996)
    Surface Science
  • Phase transition of the Si(111)4x1 In surface reconstruction investigated by electron transport measurements
    Item type: Other Conference Item
    Uchihashi, Takashi; Ramsperger, Urs (2003)
    Surface Science
  • Determination of the Au/SiNx interfacial energy by AFM and FIB tomography
    Item type: Journal Article
    Müller, C.M.; Spolenak, R. (2013)
    Surface Science
  • Surface X-ray diffraction study of boron-nitride nanomesh in air
    Item type: Journal Article
    Bunk, O.; Corso, M.; Martoccia, S.; et al. (2007)
    Surface Science
  • In situ photoelectron spectroscopy at the liquid/nanoparticle interface
    Item type: Journal Article
    Brown, Matthew A.; Jordan, Inga; Redondo, Amaia; et al. (2013)
    Surface Science
Publications 1 - 10 of 38