Journalartikel

Jahr der Veröffentlichung: 1994

Seiten: 453-458

Zeitschrift: A Journal of Physical Sciences

Bandnummer: 50

Heftnummer: 4-5

DOI Link: https://doi.org/10.1515/zna-1995-4-519

Verlag: De Gruyter

Abstract: 

The adsorption of oxygen onto a Ru(0001)-(2 x 2)-Cs phase with coverage ΘCs = 0.25 gives rise to the formation of a Ru(0001)-(2√3 x 2√3)R30°-3Cs-20 coadsorption structure with three cesium and two oxygen adatoms in the unit cell. A low-energy electron-diffraction (LEED) analysis reveals that oxygen is located in threefold hollow sites on the Ru surface while the Cs atoms remain near on-top sites; this site was also found in the pure Ru(0001)-(2 x 2)-Cs phase. The oxygen-Ru bond length of (2.14 ± 0.05) Å is longer by 0.11 A than in the Ru(0001)-(2x2)-0 phase, indicating that the Ru-O bond is weakened in the presence of coadsorbed Cs. The Cs hard sphere radius of (1.75 ± 0.07) Å is close to the ionic Pauling radius of 1.69 Å.

Harvard-Zitierstil: Gierer, M., Bludau, H., Over, H. and Ertl, G. (1994) Structural Analysis of a Cs + O Coadsorption Phase on a Ru(0001) Surface, A Journal of Physical Sciences, 50(4-5), pp. 453-458. https://doi.org/10.1515/zna-1995-4-519

APA-Zitierstil: Gierer, M., Bludau, H., Over, H., & Ertl, G. (1994). Structural Analysis of a Cs + O Coadsorption Phase on a Ru(0001) Surface. A Journal of Physical Sciences. 50(4-5), 453-458. https://doi.org/10.1515/zna-1995-4-519