| Revista: | Superficies y vacío |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000404988 |
| ISSN: | 1665-3521 |
| Autors: | González Valenzuela, C1 Espinosa Magaña, F1 Duarte Moller, A1 |
| Institucions: | 1Centro de Investigación en Materiales Avanzados S.C., Chihuahua. México |
| Any: | 2003 |
| Període: | Dic |
| Volum: | 16 |
| Número: | 4 |
| Paginació: | 30-33 |
| País: | México |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico |
| Resumen en inglés | We investigate the feasibility to obtain the local structure of the vanadium carbide system (VC0.88)of transmission core ionization electron energy loss spectroscopy. The near edge structure of C K edge and V L23 edge are discussed. The structural parameters were found analyzing the extended fine structure associated to the ionization edge in the core loss window. In order to improve the results, the experimental phase shifts were calculated and applied on each interatomic value. The interatomic distance for V - C bond was 0.20 nm and 0.21 nm which is very close to the expected value of 0.205 nm. A second interatomic distance was found and corresponds to the C – C bond with a numerical value of 0.3 nm and 0.33 nm which is also close to the respective expected value of 0.29 nm. These values were obtained by analyzing the fine structure associated to the carbon K-edge and those associated to the vanadium L23-edge. The interatomic distances are in good agreement to the expected values for VC0.88 when the experimental phase shifts were applied |
| Disciplines | Física y astronomía, Ingeniería |
| Paraules clau: | Física de materia condensada, Ingeniería de materiales, Carburo de vanadio, Espectroscopía, Microscopía electrónica de transmisión |
| Keyword: | Physics and astronomy, Engineering, Condensed matter physics, Materials engineering, Vanadium carbide, Spectroscopy, Transmission electron microscopy |
| Text complet: | Texto completo (Ver PDF) |
