A well-structured metastable ceria surface
Autor(en): | Olbrich, R. Pieper, H. H. Oelke, R. Wilkens, H. Wollschlaeger, J. Zoellner, M. H. Schroeder, T. Reichling, M. |
Stichwörter: | CEO2; CEO2(111); FILMS; GROWTH; MORPHOLOGY; Physics; Physics, Applied; PT(111); SI(111) | Erscheinungsdatum: | 2014 | Herausgeber: | AMER INST PHYSICS | Journal: | APPLIED PHYSICS LETTERS | Volumen: | 104 | Ausgabe: | 8 | Zusammenfassung: | By the growth of a 180 nm thick film on Si(111), we produce a metastable ceria surface with a morphology dominated by terraced pyramids with an oriented triangular base. Changes in the nanoscale surface morphology and local surface potential due to annealing at temperatures ranging from 300 K to 1150 K in the ultra-high vacuum are studied with non-contact atomic force microscopy and Kelvin probe force microscopy. As the surface is stable in the temperature range of 300 K to 850 K, it is most interesting for applications requiring regular steps with a height of one O-Ce-O triple layer. (C) 2014 AIP Publishing LLC. |
ISSN: | 00036951 | DOI: | 10.1063/1.4866667 |
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geprüft am 07.05.2024