Two-dimensional manganese oxide nanolayers on Pd(100): The surface phase diagram
- Author(s)
- Fanghua Li, Georg Parteder, Francesco Allegretti, Cesare Franchini, Raimund Podloucky, Svetlozar L. Surnev, Falko P. Netzer
- Abstract
Two-dimensional manganese oxide layers have been grown on Pd(100) and
have been characterized by means of scanning tunnelling microscopy, low
energy electron diffraction and x-ray photoelectron spectroscopy (XPS).
The complex surface phase diagram of MnOx on Pd(100)
is reported, where nine different novel Mn oxide phases have been
detected as a function of the chemical potential of oxygen μO.
Three regions of the chemical potential of oxygen can be identified, in
which structurally related oxide phases are formed, often in
coexistence at the surface. The different regions of μO are
reflected in the oxidation states of the respective Mn oxide nanolayers
as revealed by the Mn 2p and O 1s XPS binding energies. The MnOx
nanolayers form two-dimensional wetting layers and it is speculated
that they mediate the epitaxial growth of MnO on Pd(100) by providing
structurally graded interfaces.
- Organisation(s)
- Computational Materials Physics, Department of Physical Chemistry
- External organisation(s)
- Karl-Franzens-Universität Graz
- Journal
- Journal of Physics: Condensed Matter
- Volume
- 21
- No. of pages
- 11
- ISSN
- 0953-8984
- DOI
- https://doi.org/10.1088/0953-8984/21/13/134008
- Publication date
- 2009
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 104017 Physical chemistry, 104011 Materials chemistry
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/twodimensional-manganese-oxide-nanolayers-on-pd100-the-surface-phase-diagram(28cbe061-e151-45eb-b355-f2f130ee2235).html