The electronic properties and the 4f→5d transitions of the dopant Ce

The structural properties and 4f→5d transitions of Ce From the present calculations, we conclude that the 5d 1 level missing in the low-temperature absorption spectrum of the tetragonal Ce center with F i compensation is the second-lowest one, and the absorption to this level is overshadowed by an adjacent band usually assigned to Ce clusters and thus was not observed in experiments. We also assign the two closely-spaced absorption lines around 3118.5 Å observed in experiments to the lowest two

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