| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5400835 | Journal of Luminescence | 2013 | 5 Pages |
Abstract
⺠Terbium orthotantalates were prepared in two different crystalline structures: I2/a and P2/a. ⺠XRD and Raman scattering showed that the different space groups obtained were exhibited all the 18 Raman-active modes. ⺠PL decay curves that the Tb3+ ions occupies only one-symmetry site in both crystallographic arrangements. ⺠Dominated emission of Tb3+ (5D4â7F5) is centered with a maximum intensity at 549 nm (M-type) and 543 nm (Mâ²-type). ⺠Fluorescence lifetimes for M-TbTaO4 and Mâ²-TbTaO4 were determined as 33.4 μs and 1.25 ms, respectively.
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Authors
Kisla P.F. Siqueira, Alexandre P. Carmo, Maria J.V. Bell, Anderson Dias,