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- W2308106105 abstract "Dy 3+ -doped phosphate glasses of the compositions 20Gd 2 O 3 : 10CaO : (70-x)P 2 O 5 : xDy 2 O 3 , where x = 0.05, 0.10, 0.50, 1.00 and 1.50 mol% have been prepared by melt quenching technique and characterized by optical absorption, emission spectra and decay curve analysis. All the transitions in the absorption spectra are originated from the 6 H 15/2 ground level to the various excited states and these are intra configuration (f-f) transitions. The observed twelve absorption bands centered at 349, 362, 387, 425, 451, 473, 750, 800, 895, 1089, 1266 and 1676 nm are assigned to 6 P 7/2 , 4 P 3/2 , 4 F 7/2 , 4 G 11/2 , 4 I 15/2 , 4 F 9/2 , 6 F 3/2 , 6 F 5/2 , 6 F 7/2 , 6 F 9/2 , 6 H 9/2 and 6 H 11/2 transitions, respectively. The absorption spectra of glasses increase with increase in Dy 3+ ion concentrations. The emission spectra of Dy 3+ -doped glasses are observed to be centered at 483, 573, 662 and 752 nm originated from the 4 F 9/2 → 6 H 15/2 , 4 F 9/2 → 6 H 13/2 , 4 F 9/2 → 6 H 11/2 and 4 F 9/2 → 6 H 9/2 transitions, respectively under excitation at 349 nm. The highest emission intensity of Dy 3+ -doped glass is 0.50 mol% due to concentration quenching effect. The experimental lifetimes are found to decrease when Dy 3+ ion concentrations increased due to energy transfer process between Dy 3+ ions." @default.
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- W2308106105 date "2016-01-01" @default.
- W2308106105 modified "2023-09-30" @default.
- W2308106105 title "Spectral Investigations of Dy<sup>3+</sup>-Doped Gd<sub>2</sub>O<sub>3</sub>-CaO-P<sub>2</sub>O<sub>5</sub> Glasses" @default.
- W2308106105 doi "https://doi.org/10.4028/www.scientific.net/kem.675-676.384" @default.
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