Low-temperature spectroscopy of optical centers in cerium-yttrium (Ce1-xYxO2-x/2) and cerium-zirconium (Ce1-xZrxO2) oxides
| Autor: | I. I. Bespalova, P. O. Maksimuchuk, N. V. Kononets, Elena Okrushko, Yu. V. Malyukin, V. V. Seminko, O. G. Viagin |
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| Rok vydání: | 2017 |
| Předmět: |
Zirconium
Materials science Physics and Astronomy (miscellaneous) Inorganic chemistry General Physics and Astronomy chemistry.chemical_element 02 engineering and technology Yttrium 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Oxygen 0104 chemical sciences Ion Cerium Nanocrystal chemistry Impurity 0210 nano-technology Spectroscopy |
| Zdroj: | Low Temperature Physics. 43:636-640 |
| ISSN: | 1090-6517 1063-777X |
| Popis: | The results of studying the impact of isovalent (Zr4+) and non-isovalent (Y3+) impurity ions on the formation of oxygen vacancies in the lattice of cerium dioxide nanocrystals. It is shown that the oxygen vacancy content increases significantly with the introduction of both the Y3+ and Zr4+ ions, and that the oxygen vacancies play a part in the formation of two types of optical centers: Ce3+-V··-Ce3+ and F+-centers. The ratio of these optical centers can be manipulated by varying the concentration of impurity ions and the atmosphere of high-temperature nanocrystal processing. |
| Databáze: | OpenAIRE |
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