Electron energy loss spectroscopy of TiC, ZrC and HfC
The dielectric properties of commercial TiC, ZrC and HfC powders were determined by analyzing the low loss region of the EELS spectrum in a transmission electron microscope. From these data, the optical joint density of states (OJDS) were obtained by Kramers–Kronig analysis. As maxima observed in th...
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| Tipo de recurso: | artículo |
| Estado: | Versión enviada para evaluación y publicación |
| Fecha de publicación: | 2002 |
| País: | México |
| Institución: | Centro de Investigación en Materiales Avanzados |
| Repositorio: | Fuente de Objetos Científicos Open Access del CIMAV |
| OAI Identifier: | oai:cimav.repositorioinstitucional.mx:1004/960 |
| Acceso en línea: | http://cimav.repositorioinstitucional.mx/jspui/handle/1004/960 |
| Access Level: | acceso abierto |
| Palabra clave: | info:eu-repo/classification/Dialectric function/EELS info:eu-repo/classification/ZrC/TiC info:eu-repo/classification/Electronic band structure/HfC info:eu-repo/classification/cti/1 info:eu-repo/classification/cti/22 info:eu-repo/classification/cti/2299 info:eu-repo/classification/cti/229999 |
| Sumario: | The dielectric properties of commercial TiC, ZrC and HfC powders were determined by analyzing the low loss region of the EELS spectrum in a transmission electron microscope. From these data, the optical joint density of states (OJDS) were obtained by Kramers–Kronig analysis. As maxima observed in the OJDS spectra are assigned to interband transitions across the energy gap, these spectra can be interpreted on the basis of existing energy-band calculations. Comparison between experimental results and theory shows good agreement. |
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