Rare earth oxide films as model systems

Rare Earth Oxides (REOs) are certainly an exciting group of elements, though often forgotten at the bottom of the periodic table. I got to work with the oxide of praseodymium during my doctoral studies and later on studied also films of the oxides of cerium, samarium, and terbium. I will try to add pieces to the lengthy story now and then when I find the time. Now the start is made...let's see how it will continue. Again, stay tuned. (June 2025)

Publications

Thermal reduction of ceria nanostructures on rhodium(111) and re-oxidation by CO2

Andreas Schaefer, Benjamin Hagman, Jan Höcker, Uta Hejral, Jan Ingo Flege, Johan Gustafson

Phys. Chem. Chem. Phys., vol. 20(29), The Royal Society of Chemistry, 2018, pp. 19447-19457

Controlling the physics and chemistry of binary and ternary praseodymium and cerium oxide systems

Gang Niu, Marvin Hartwig Zoellner, Thomas Schroeder, Andreas Schaefer, Jin-Hao Jhang, Volkmar Zielasek, Marcus Bäumer, Henrik Wilkens, Joachim Wollschläger, Reinhard Olbrich, Christian Lammers, Michael Reichling

Phys. Chem. Chem. Phys., vol. 17(38), The Royal Society of Chemistry, 2015, pp. 24513-24540

Oxidation of a Tb2O3(111) Thin Film on Pt(111) by Gas-Phase Oxygen Atoms

William Cartas, Rahul Rai, Ajinkya Sathe, Andreas Schaefer, Jason F. Weaver

The Journal of Physical Chemistry C, vol. 118, 2014, pp. 20916-20926

Structural Changes of Ultrathin Cub-PrO2(111)/Si(111) Films Due to Thermally Induced Oxygen Desorption

H. Wilkens, S. Gevers, S. Röhe, A. Schaefer, M. Bäumer, M. H. Zoellner, T. Schroeder, J. Wollschläger

The Journal of Physical Chemistry C, vol. 118, 2014, pp. 3056-3061

Temperature-Dependent Reduction of Epitaxial Ce1–xPrxO2−δ (x = 0–1) Thin Films on Si(111): A Combined Temperature-Programmed Desorption, X-ray Diffraction, X-ray Photoelectron Spectroscopy, and Raman Study

Marvin Hartwig Zoellner, Gang Niu, Jin-Hao Jhang, Andreas Schaefer, Peter Zaumseil, Marcus Bäumer, Thomas Schroeder

The Journal of Physical Chemistry C, vol. 117, 2013, pp. 24851-24857

Photoemission study of praseodymia in its highest oxidation state: The necessity of in situ plasma treatment

A. Schaefer, S. Gevers, V. Zielasek, T. Schroeder, J. Falta, J. Wollschläger, M. Bäumer

The Journal of Chemical Physics, vol. 134, 2011 Feb, p. 054701

Chemistry of thin film formation and stability during praseodymium oxide deposition on Si(111) under oxygen-deficient conditions

A. Schaefer, A. Sandell, L.E. Walle, V. Zielasek, M. Schowalter, A. Rosenauer, M. Bäumer

Surface Science, vol. 604, 2010, pp. 1287-1293

Growth of praseodymium oxide on Si(111) under oxygen-deficient conditions

A. Schaefer, V. Zielasek, Th. Schmidt, A. Sandell, M. Schowalter, O. Seifarth, L. E. Walle, Ch. Schulz, J. Wollschläger, T. Schroeder, A. Rosenauer, J. Falta, M. Bäumer

Phys. Rev. B, vol. 80(4), American Physical Society, 2009 Jul, p. 045414

Heteroepitaxial praseodymium sesquioxide films on Si(111): A new model catalyst system for praseodymium oxide based catalysts

A. Schaefer, T. Schroeder, G. Lupina, Y. Borchert, J. Dabrowski, Ch. Wenger, M. Bäumer

Surface Science, vol. 601, 2007, pp. 1473-1480