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Title: A well-structured metastable ceria surface

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.
Authors:
; ; ; ; ;  [1] ; ;  [2]
  1. Fachbereich Physik, Universität Osnabrück, Barbarastr. 7, 49076 Osnabrück (Germany)
  2. IHP, Im Technologiepark 25, 15236 Frankfurt (Oder) (Germany)
Publication Date:
OSTI Identifier:
22293069
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANNEALING; ATOMIC FORCE MICROSCOPY; CERIUM OXIDES; CRYSTAL GROWTH; CRYSTAL STRUCTURE; MORPHOLOGY; NANOSTRUCTURES; PRESSURE RANGE MICRO PA; SILICON; SURFACE POTENTIAL; SURFACES; TEMPERATURE RANGE; THIN FILMS