التفاصيل البيبلوغرافية
| العنوان: |
Site selective luminescence of Eu3+ ions in K2Mg(SO4)2⋅6H2O crystal. |
| المؤلفون: |
Marzougui, H.1 hajoura.marzougui@gmail.com, Martin, I.R.2,3, Attia-Essaies, S.1,4, Hassen-Chehimi, Dalila Ben1, Lalla, E.2, Léon-Luis, S.F.2,3 |
| المصدر: |
Optical Materials. Aug2015, Vol. 46, p339-344. 6p. |
| مصطلحات موضوعية: |
*LUMINESCENCE, *EUROPIUM, *SULFATES analysis, *METAL ions, *WATER analysis, *X-ray diffraction |
| مستخلص: |
Eu 3+ doped K 2 Mg(SO 4 ) 2 ⋅6H 2 O crystal was prepared by evaporation method at room temperature. A complete structure characterization including X-ray diffraction, Raman and infrared was carried out. The results reveal that this crystal crystallizes in a monoclinic structure and the most active phonons are associated with vibrations of molecular water and sulfate environments. On the other hand, the emission spectrum indicates that Eu 3+ ions occupy two different sites. Therefore, a study about the luminescence from each local environment is presented. The emission spectra and luminescence decays of Eu 3+ ions indicate than there are not energy transfer processes between both sites. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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