Optical Properties of (ZrO2)1 – x(Y2O3)х (х = 0–0.037) Crystals Grown by Directional Crystallization of the Melt
| Autor: | A. P. Eliseev, S. V. Rykhlitskii, Timofey V. Perevalov, Vladimir N. Kruchinin, Vladimir A. Gritsenko, Elena E. Lomonova |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Zirconium Photoluminescence Materials science Analytical chemistry chemistry.chemical_element 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 010309 optics Tetragonal crystal system symbols.namesake chemistry law 0103 physical sciences symbols Cubic zirconia Crystallization Raman spectroscopy Luminescence Monoclinic crystal system |
| Zdroj: | Optics and Spectroscopy. 128:1963-1969 |
| ISSN: | 1562-6911 0030-400X |
| Popis: | The luminescent and optical properties of materials based on zirconium(IV) oxide grown by crystallization of ZrO2 melts with 0, 2.0, 2.5, 2.8, and 3.7 mol % of Y2O3 are studied. Using Raman spectroscopy, it is found that this material with the Y2O3 concentration below 2 mol % is mainly a monoclinic ZrO2 phase. The photoluminescence spectra of these crystals contain a blue–green band peaking at an energy of 2.4 eV. This fact in combination with the specific features of the refractive index and absorption coefficient dispersions indicates the presence of high concentrations of oxygen vacancies and polyvacancies in the samples. At higher concentrations of Y2O3 in the mixture, the tetragonal ZrO2 modification becomes dominant in the materials under study and the blue–green luminescence intensity decreases. The experimental optical spectra are analyzed in comparison with the ab initio calculated spectra for ideal ZrO2 crystals in the cubic, tetragonal, and monoclinic phases. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |