Cyclic Ozone Identified in Magnesium Oxide (111) Surface Reconstructions

Autor:	R. Plass, Laurence D. Marks, Marija Gajdardziska-Josifovska, Kenneth Egan, Daniel Grozea, Chris Collazo-Davila, Eric Landree
Rok vydání:	1998
Předmět:	Physics Cyclic ozone Faceting chemistry.chemical_compound Crystallography Oxygen atom Electron diffraction chemistry Magnesium General Physics and Astronomy chemistry.chemical_element Surface (topology)
Zdroj:	Physical Review Letters. 81:4891-4894
ISSN:	1079-7114 0031-9007
Popis:	We report the first experimental evidence of the cyclic form of ozone, found in three air stable surface reconstructions of MgO (111) annealed above 1450 \ifmmode^\circ\else\textdegree\fi{}C. The $\mathrm{MgO}(111)\ensuremath{-}(\sqrt{3}\ifmmode\times\else\texttimes\fi{}\sqrt{3})R30\ifmmode^\circ\else\textdegree\fi{}$ surface consists of equilateral oxygen trimers while the $\mathrm{MgO}(111)\ensuremath{-}(2\ifmmode\times\else\texttimes\fi{}2)$ and $\mathrm{MgO}(111)\ensuremath{-}(2\sqrt{3}\ifmmode\times\else\texttimes\fi{}2\sqrt{3})R30\ifmmode^\circ\else\textdegree\fi{}$ surfaces are periodic arrangements of trimers and single oxygen atoms. The oxygen trimers appear to be centered over underlying Mg atoms. The structures fit transmission electron diffraction data better than neutral plane faceting based models proposed for the polar MgO (111) surface.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0a3553b9fec7563facecceec0b9b57de https://doi.org/10.1103/physrevlett.81.4891 Zobrazit plný text záznamu