Detection of the adsorption of water monolayers through the ion oscillation frequency in the magnesium oxide lattice by means of low energy electron diffraction
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| Auteurs: | , , , , , |
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| Format: | artículo original |
| Date de publication: | 2016 |
| Description: | We investigate the variation of the oscillation frequency of the Mg2+ and O2− ions in the magnesium oxide lattice due to the interactions of the surface with water monolayers by means of Low Energy Electron Diffraction. Our key result is a new technique to determine the adsorbate vibrations produced by the water monolayers on the surface lattice as a consequence of their change in the surface Debye temperature and its chemical shift. The latter was systematically investigated for different annealing times and for a constant external thermal perturbation in the range of 110–300 K in order to accomplish adsorption or desorption of water monolayers in the surface lattice. |
| Pays: | Kérwá |
| Institution: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/74407 |
| Accès en ligne: | http://aip.scitation.org/doi/10.1063/1.4944912 https://hdl.handle.net/10669/74407 |
| Mots-clés: | Monolayers Low energy electron diffraction Magnesium Oxide surfaces Adsorption |