Spectroscopic properties of Nd3+ doped NaLa0.5Gd0.5(WO4)2 crystals

The absorption spectra of Nd3+ ions in NaLa0.5Gd0.5(WO4)2:Nd single crystals were registered in the temperature range 4.5–300K. The crystal-field energy level scheme for the IR and visible multiplets was derived. The intensity parameters Ωt (t=2,4,6) were determined by the Judd–Ofelt method. The Nd3...

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Bibliographic Details
Published in:Journal of luminescence 2013-06, Vol.138, p.32-38
Main Authors: Ryabochkina, Polina A., Antoshkina, Svetlana A., Klimin, Sergei A., Lis, Denis A., Subbotin, Kirill A., Ushakov, Sergey N., Zharikov, Evgeny V.
Format: Article
Language:English
Subjects:
Crystals
Energy levels
Hypersensitive transition
Infrared radiation
Intensity parameters
Luminescence
Mixed NaLaGd double tungstates
Oscillator strengths
Rare-earth optical spectroscopy
Spectroscopy
Symmetry
Tungstates
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Summary:The absorption spectra of Nd3+ ions in NaLa0.5Gd0.5(WO4)2:Nd single crystals were registered in the temperature range 4.5–300K. The crystal-field energy level scheme for the IR and visible multiplets was derived. The intensity parameters Ωt (t=2,4,6) were determined by the Judd–Ofelt method. The Nd3+ ion in the titled compound as well as in other double tungstates possesses much higher values of the oscillator strength for the hypersensitive transition 4I9/2→4G5/2 and of the intensity parameter Ω2. This fact was tentatively assigned to the lowering of the S4 symmetry of regular Nd3+ site to the C2 one. ► This paper analyses spectroscopic characteristics of NaLa0.5Gd0.5(WO4)2:Nd crystals. ► The energy level scheme for NaLa0.5Gd0.5(WO4)2:Nd was derived. ► The hypersensitivity of 4I9/2→4G5/2 transition of Nd3+ in this crystal was discussed.
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2013.01.006