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EnglishA sample of nanocrystalline Y1.8Eu0.2O3 was examined by 151Eu Mössbauer spectroscopy. The degree of covalency of the Eu-0 bond has been studied. The spectrum of the cubic Y1.8Eu0.2O3 sample has been resolved into 2 contributions due to europium in the C3i and C2 sites, for the first time in 151Eu Mössbauer spectroscopy. The degree of covalency and the electric field gradient of the 2 sites has been compared. The occupancy, by the lanthanide ion, of the more and less symmetric sites in the cubic structure of Y1.8Eu0.2O3 has been investigated and discussed.
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| Titolo: | Investigation of Eu^(3+) site occupancy and Eu-O covalency in nanocrystalline Y_2O_3 by Mossbauer spectroscopy | |
| Autori: | ||
| Data di pubblicazione: | 2002 | |
| Abstract: | A sample of nanocrystalline Y1.8Eu0.2O3 was examined by 151Eu Mössbauer spectroscopy. The degree of covalency of the Eu-0 bond has been studied. The spectrum of the cubic Y1.8Eu0.2O3 sample has been resolved into 2 contributions due to europium in the C3i and C2 sites, for the first time in 151Eu Mössbauer spectroscopy. The degree of covalency and the electric field gradient of the 2 sites has been compared. The occupancy, by the lanthanide ion, of the more and less symmetric sites in the cubic structure of Y1.8Eu0.2O3 has been investigated and discussed. | |
| Handle: | http://hdl.handle.net/11584/47950 | |
| ISBN: | 978-1-4020-1087-3 | |
| Tipologia: | 2.1 Contributo in volume (Capitolo o Saggio) |
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