Papers
Release Time: 2025-04-30Hits:
- Date:2025-04-30
- Title of Paper:Stoichiometry–structure correlation of epitaxial Ce1−xPrxO2−δ (x=0−1) thin films on Si(111)
- Journal:Journal of Crystal Growth
- Summary:Epitaxial oxide thin film layers are of interest for model catalytic studies. We report the growth of Ce1−xPrxO2−δ mixed oxide layers of different stoichiometries (x=0–1) and oxygen deficiency (δ>0) on Si(111) by co-evaporating molecular beam epitaxy. The main objective is to identify the crystal phases and to investigate the correlation between compositions and crystal structures. X-ray photoemission spectroscopy was performed to quantify the stoichiometries. An extensive laboratory and synchrotron based X-ray diffraction analysis was carried out to determine the vertical and lateral lattice orientations and the strain status of the layers. The study revealed that single crystalline Ce1−xPrxO2−δ/Si(111) heterostructures can be epitaxially grown on Si(111) for model catalytic studies. In addition to the structure–stoichiometry relationship typical to mixed oxide bulk powders, we identified a hexagonal mixed Ce–Pr oxide thin film phase not yet reported in bulk studies.
- Co-author:Marvin Hartwig Zoellner · Peter Zaumseil · Henrik Wilkens · [8th Gang Niu] ·
- Translation or Not:No
- Date of Publication:2012-09-15
