Surface and bulk dynamics
Metal oxides display a wide range of important industrial applications. Many of these rely on chemical and physical phenomena which take place at the surface or at interfaces, often at high temperatures. We explore the nature and magnitude of the ionic motion at different temperatures.
Molecule-surface interactions depend on the interplay between the molecule’s and the surface’s electronic structures. The latter depends critically on the topology of the surface, its degree of non-stoichiometry and the presence of structural defects. Here, oxygen vacancy formation at ceria surfaces is of particular interest to us.
Important applications of metal oxides range from environmental gas sensing and oxygen buffering in vehicle emissions catalysis, to uses as electrolytes in fuels cells or as wide band gap semiconductors. These applications depend critically upon the properties of native point defects, impurities and dopants.