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- W2102735514 abstract "Abstract Luminescence properties have been studied for the Eu3+ ion in glass, crystal powder and a polymer film under monochromatic laser-light excitation. In the case of Eu3+ in Ca(PO3)2 glass, it has been found that the transition strength of the site-selected 5D0-7F0 line is proportional to the square of the second-order crystal-field parameter B20. This suggests that the 5D0−7F0 transition in this material is partially allowed by the crystal-field mixing of the MJ = 0 component of the 7F2 manifold into 7F0. The analysis of the intensity ratio between the 5D0−7F0 and the 5D0− 7F2 lines gives support to this interpretation. For Y2O2S:Eu3+, on the other hand, a fluorescence measurement under hydrostatic pressure has revealed that the transition probability of the 5D0−7F0 line is rather insensitive to the value of B20. The same result has also been obtained for Eu3+-doped polyvinyl alcohol from a fluorescence line-narrowing experiment. Therefore, it is concluded that there exist at least two kinds of mechanisms in the 5D0−7F0 transition of Eu3+. Probable mechanisms are discussed." @default.
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- W2102735514 date "1991-01-01" @default.
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- W2102735514 title "5D0-7F0 transition mechanism of Eu3+ in Ca(PO3)2 glass, Y2O2S crystal and polyvinyl alcohol" @default.
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- W2102735514 doi "https://doi.org/10.1016/0022-2313(91)90172-r" @default.
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