This work reports on the spectroscopic properties of europium ions intercalated in a vanadium pentoxide matrix, as well as the effects of thermal treatment on its structural and electronic properties. X-ray diffraction, TG/DTA, ESR, luminescenceas well as XANES were used in order to characterize the intercalation compound. For the as grown samples, the intercalation of Eu{sup}(3+) is observed to have little effect in the V{sub}2O{sub}5 lamellar structure, however the inter-planar spacing growsfrom 1.19 nm to 1.33 nm for a 10% Eu{sup}(3+) content. The luminescence for the as grown samples are dominated by the host, the same happening with the ESR spectra. However ESR data show that the presence of Eu{sub}(3+) in the host induces the partialreduction of vanadium to V{sub}(4+). For samples treated above 873K the luminescence excitation spectra presents a new shoulder at 300 nm, which when excited shows emissions bands typical of the Eu{sub}(3+). In ESR the same thermal treatments are markedby the appearance of a new broad line assigned to ferromagnetic EuO, as well as the partial oxidation of V{sub}(4+) to V{sub}(5+). This result may be correlated to suppression of Eu{sub}(3+) luminescence due to the presence of water in the neighborhood of Eu(3+).
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