Fundamental optical absorption edge of undoped tetragonal zirconium dioxide
| Autor: | R. S. Sorbello, C. R. Aita, E. E. Hoppe |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Zirconium dioxide Extended X-ray absorption fine structure Band gap Analytical chemistry Photon energy Molecular physics Tetragonal crystal system chemistry.chemical_compound Absorption edge chemistry Ab initio quantum chemistry methods Attenuation coefficient |
| Zdroj: | Applied Physics Letters. 82:677-679 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.1543234 |
| Popis: | The high-frequency optical absorption edge of pure tetragonal ZrO2, isolated in a ZrO2–Al2O3 nanolaminate film structure, was determined using transmission spectrophotometry. The functional dependence of the absorption coefficient on photon energy shows two interband transitions: an initial indirect transition at 5.22 eV (i.e., the band gap) followed by a direct transition at 5.87 eV. The edge structure is associated with O 2p→Zr 4d electron states and discussed in terms of ab initio calculations reported in the literature. |
| Databáze: | OpenAIRE |
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