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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1166| Electron energy-loss spectroscopy of V2O5 nanofibers synthesized by electro-spinning | |
| MARTHA TERESITA OCHOA LARA FRANCISCO ESPINOSA MAGAÑA | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| EELS Dielectric function | |
| The dielectric properties of V2O5 nanofibers, synthesized by the electrospinning method, are studied by analyzing the low-loss region of the electron energy loss spectroscopy (EELS) in a transmission electron microscope. A comparison of experimental EELS spectra and ab initio density-functional theory calcula-tions (WIEN2k code) within the Generalized Gradient Approximation (GGA) is presented, having found an excellent agreement between them. Although the experimental EELS has been acquired for the nanopar-ticles composing the fibers, and numerical calculations were carried out for bulk material, agreement between experimental and calculated results shows that no difference exists between the electronic structure in calculated bulk material and the nanoparticles. Furthermore, our results from EELS confirm that we accomplished the expected crystalline phase. The origins of interband transitions are identified in the electronic band structure by calculating the partial imaginary part of the dielectric function and the partial density of states. | |
| 2013 | |
| Artículo | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos |
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| Electron energy spectroscopy of V2O5 nanofibers synthesis PDF 2013.pdf | 482.52 kB | Adobe PDF | Visualizar/Abrir |