Oxide Surfaces and Interfaces

Introduction

Oxide surfaces, interfaces and nanostructures play an important role in energy conversion processes, as protective coating materials or insulating barriers in nanoelectronic devices. The physical and chemical properties of oxide surfaces depend strongly on the surrounding environment such as oxygen pressure and temperature. We use surface sensitive x-ray diffraction techniques in combination with spectroscopy and scanning microscopy methods to investigate the atomic structure and chemical composition of oxide surfaces and interfaces under working conditions as a function of the external parameters.

Current research fields

  • Atomic structure of solid oxide fuel cell model electrodes under operation conditions
  • Interplay between oxide surfaces and bulk defects
  • Metal adsorption on oxide surfaces
  • Structure – property relations in thin oxide films
  • Adsorption of molecules on oxide surfaces

Contact

Dr. Vedran Vonk
Dr. Heshmat Noei
Prof. Dr. Andreas Stierle

Project(s) involved

http://foxsi.tuwien.ac.at/

DFG funded subproject in Austrian SFB Functional Oxide Surfaces and Interfaces (FOXSI)

Publications

Atomic structure and stability of magnetite Fe3O4(001): An X-ray view
B. Arndt, R. Bliem, O. Gamba, J.E.S. van der Hoeven, H. Noei, U. Diebold, G.S. Parkinson, A. Stierle, Surface Science 653, 76 (2016)

Operando X-ray Investigation of Electrode/Electrolyte Interfaces in Model Solid Oxide Fuel Cell
S. Volkov, V. Vonk, N. Khorshidi, D. Franz, M. Kubicek, V. Kilic, R. Felici, T. Huber, E. Navickas, G. Rupp, J. Fleig, A. Stierle, Chem. Mater. 28 (11), 3727 (2016)

Organically linked iron oxide nanoparticle supercrystals with exceptional isotropic mechanical properties
A. Dreyer, A. Feld, A. Kornowski, E.D. Yilmaz, H. Noei, A. Meyer, T. Krekeler, C. Jiao, A. Stierle, V. Abetz, H. Weller, and G.A. Schneider, Nature Materials 15, 522 (2016)

Adsorption of Formic Acid on the Fe3O4(001) Surface
Oscar Gamba, Heshmat Noei, Jiří Pavelec, Roland Bliem, Michael Schmid, Ulrike Diebold, Andreas Stierle, and Gareth S. Parkinson
J. Phys. Chem. C 119 (35), pp 20459–20465 (2015)

Atomic structure and composition of the yttria-stabilized zirconia (111) surface
Vedran Vonk, Navid Khorshidi, Andreas Stierle, and Helmut Dosch, Surf. Sci. 612, 69 (2013)

Polar-discontinuity-retaining A-site intermixing and vacancies at SrTiO3/LaAlO3 interfaces
V. Vonk, J. Huijben, D. Kukuruznyak, A. Stierle, H. Hilgenkamp, A. Brinkman, and S. Harkema, Phys. Rev. B 85, 045401 (2012).

Atomic-scale structure of the insulating spinel MgAl2O4(100) surface
M. K. Rasmussen, A. S. Foster, B. Hinnemann, F. F. Canova, S. Helveg, K. Meinander, J. Knudsen, A. Vlad, E. Lundgren, A. Stierle, F. Besenbacher, J. V. Lauritsen Phys. Rev. Lett. 107 036102 (2011).