Les phases SrLa2Al2O7 et SrGd2Al2O7 |
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Authors: | Jean Fava Gilles Le Flem |
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Affiliation: | Laboratoire de Chimie du Solide du C.N.R.S. Université de Bordeaux I 351, cours de la Libération, 33405 Talence, France |
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Abstract: | SrLa2Al2O7 and SrGd2Al2O7 belong to the structural type Sr3Ti2O7. In SrGd2Al2O7 strontium and gadolinium occupy respectively the 12 and 9 coordinated sites, whereas in SrLa2Al2O7 the homologous cations are statistically distributed. The fluorescence spectra of both phases activated by Eu3+ ions show that the only possible position of Eu3+ is the 9 coordinated site. |
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