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Calendar of Physics Talks Vienna
| Systematic trends in electronic structure in complex lanthanide oxides |
| Speaker: | Russell G. Egdell (University of Oxford, Inorganic Chemistry Laboratory, Oxford/UK) |
| Abstract: | The lanthanide elements between La and Lu have broadly similar chemical properties, but decreasing ionic radii and more tightly bound 4f orbitals in progressing across the series. This provides a unique opportunity for the systematic tuning of structural and electronic parameters in ternary or more complicated oxides. This seminar will focus on two series of complex lanthanide oxides, where X-ray photoemission spectroscopy (XPS) is combined with powder diffraction and diffuse reflectance optical spectroscopy to probe structural and electronic properties.
Several years ago my group stumbled across the little-studied perovskite LaInO3 while attempting to tune the lattice parameter of In2O3 by alloying with La2O3. This led to a study of the structural and electronic properties of four perovskites - LnInO3 with Ln = La, Pr, Nd, Sm. The focus was on bandgaps, 4f ionisation energies and increa |
| Date: | Tue, 23.07.2019 |
| Time: | 16:00 |
| Location: | TU Wien, Institut für Angewandte Physik, E134 1040 Wien, Wiedner Hauptstraße 8-10 Yellow Tower „B“, 5th floor, SEM.R. DB gelb 05 B |
| Contact: | Univ.Prof. Dr. Ulrike Diebold |
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