| Autor: |
Pajasová, L., Soukup, L., Jastrabík, L., Chvostová, D. |
| Předmět: |
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| Zdroj: |
Surface Review & Letters; Feb2002, Vol. 9 Issue 1, p473, 5p |
| Abstrakt: |
The optical constants and dielectric functions of a series of samples of glassy carbon subjected to a heat treatment from 1000°C to 3000°C have been evaluated in the spectral region of 1.5-13.8 eV. In the region of 1.5-5.0 eV the method of spectroscopic ellipsometry and multiangle reflectivity with p-polarized light was applied, while in the VUV region the optical constants were evaluated by means of multiangle reflectivity with partially polarized light as well as by means of Kramers-Kronig analysis. The optical spectra are discussed, in analogy with graphite, in terms of single-electron transitions and π electron plasma excitations. The changes in the spectra by heating are ascribed to increasing average size of ordered regions and sample densification in the absence of three-dimensional graphitization. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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