Analysis of the Refractive Indices of TiO2, TiOF2, and TiF4: Concept of Optical Channel as a Guide To Understand and Design Optical Materials
| Autor: | Alain Demourgues, Nicolas Viadere, Yvan Montardi, Fabrice Goubin, Stéphane Jobic, Myung-Hwan Whangbo, Alain Tressaud, Xavier Rocquefelte |
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| Přispěvatelé: | Institut des Matériaux Jean Rouxel (IMN), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN), Rhodia, Centre de Recherches d'Aubervilliers (RHODIA), RHODIA, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Department of Chemistry (NCSU), North Carolina State University [Raleigh] (NC State), University of North Carolina System (UNC)-University of North Carolina System (UNC), Centre de Recherches d'Aubervilliers, Department of Chemistry, North Carolina Raleigh |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Analytical chemistry
Physics::Optics 02 engineering and technology Dielectric functions Dielectric 010402 general chemistry 01 natural sciences Band structure calculations Inorganic Chemistry Condensed Matter::Materials Science chemistry.chemical_compound Optical materials 0103 physical sciences Physics::Atomic and Molecular Clusters TiO2 Physical and Theoretical Chemistry Physics::Chemical Physics Electron energy loss spectroscopy Chemical composition 010302 applied physics Optical properties TiOF2 010405 organic chemistry business.industry Fluorine General Medicine [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry TiF4 Titanium dioxide Density functional theory Optoelectronics 0210 nano-technology business Refractive index Communication channel |
| Zdroj: | Inorganic Chemistry Inorganic Chemistry, American Chemical Society, 2005, 44, pp.3589. ⟨10.1021/ic048259w⟩ Inorganic Chemistry, American Chemical Society, 2005, 44 (10), pp.3589-3593. ⟨10.1021/ic048259w⟩ |
| ISSN: | 0020-1669 1520-510X |
| DOI: | 10.1021/ic048259w⟩ |
| Popis: | 5 pages; International audience; In an effort to gain insight into how optical properties of insulating materials are affected by a change in chemical composition, we investigated the dielectric functions of titanium dioxide, TiO2, and its fluorine-substituted phases, TiOF2 and TiF4, by electron energy loss spectroscopy measurements and density functional theory electronic band structure calculations. The refractive indices of these compounds are found to be inversely proportional to their cell volumes per formula unit. This observation was explained by employing the concept of optical channels. Our study indicates that the light-scattering properties of insulating compounds can be controlled by modifying their cell volumes. |
| Databáze: | OpenAIRE |
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