TY  - JOUR
AU  - Hackl, Johanna
AU  - Duchon, Tomas
AU  - Gottlob, Daniel M.
AU  - Cramm, Stefan
AU  - Veltruská, Kateřina
AU  - Matolín, Vladimír
AU  - Nemšák, Slavomír
AU  - Schneider, Claus M.
TI  - On the growth mechanisms of polar (100) surfaces of ceria on copper (100)
JO  - Surface science
VL  - 671
SN  - 0039-6028
CY  - Amsterdam
PB  - Elsevier
M1  - FZJ-2018-01251
SP  - 1 - 5
PY  - 2018
AB  - We present a study of temperature dependent growth of nano-sized ceria islands on a Cu (100) substrate. Low-energy electron microscopy, micro-electron diffraction, X-ray absorption spectroscopy, and photoemission electron microscopy are used to determine the morphology, shape, chemical state, and crystal structure of the grown islands. Utilizing real-time observation capabilities, we reveal a three-way interaction between the ceria, substrate, and local oxygen chemical potential. The interaction manifests in the reorientation of terrace boundaries on the Cu (100) substrate, characteristic of the transition between oxidized and metallic surface. The reorientation is initiated at nucleation sites of ceria islands, whose growth direction is influenced by the proximity of the terrace boundaries. The grown ceria islands were identified as fully stoichiometric CeO2 (100) surfaces with a (2 × 2) reconstruction.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000429512100001
DO  - DOI:10.1016/j.susc.2018.01.008
UR  - https://juser.fz-juelich.de/record/843685
ER  -