Fluorescence and phase transitions of Mg-Al-Eu ternary layered double hydroxides – dependence on annealing
Fluorescence and phase transitions of a new Mg-Al-Eu ternary layered double hydroxide (LDH) and their dependence on thermal treatment were studied for the first time. Phase transitions occurred as the temperature increased from 400 to 1100ºC. The process of phase transition is discussed in detail. The emissions of Eu3+ ions described by the 5D0–7FJ transition (J = 1,2,3,4), and especially for the 5D0–7FJ transition (J = 1, 2) varied markedly with phase transformations from LDH, MgO, to mixtures of MgO and MgAl2O4. Moreover, strong emissions of Eu3+ ions are present in these new host materials. These results indicate that Mg-Al-Eu ternary LDH may be a potential candidate for materials applied in fluorescent devices.
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Document Type: Research Article
Publication date: 2011-09-01