Spectroscopic investigations of nanostructured LiNbO3 doped with Eu3+

Hreniak, D.; Speghini, Adolfo; Bettinelli, Marco; Stręk, W.

doi:10.1016/j.jlumin.2005.12.054

Cited by 37 publications

(18 citation statements)

References 17 publications

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“…Additionally, niobates are known as interesting photoactive host materials, and the luminescent properties of LiNbO 3 [4], KNbO 3 [5], LnNbO 4 (Ln = La, Gd, and Y) [6,7] and KNb 3 O 8 [8] have been studied extensively. However, to the best of our knowledge, there are few investigations into the metal niobates (e.g., CdNb 2 O 6 ).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and the luminescent properties of CdNb2O6 oxides by sol–gel process

Hsiao

Chang

Chen

et al. 2009

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Synthesis and the luminescent properties of CdNb2O6 oxides by sol–gel process

Hsiao

Chang

Chen

et al. 2009

Journal of Alloys and Compounds

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“…Four sites have been found for Eu 3+ in LiNbO 3 structure by the analysis of time resolved and site selective measurements. 10,21 The formation of Eu 3+ ͑Nb 5+ ͒ -Eu 3+ ͑Li + ͒ pairs has been suggested for the major Eu͑3͒ and Eu͑4͒ sites, while Eu 3+ ͑1,2͒ ions in Nb 5+ lattice positions.…”

Section: Resultsmentioning

confidence: 99%

Correlation between the spectroscopic and structural properties with the occupation of Eu3+ sites in powdered Eu3+-doped LiTaO3 prepared by the Pechini method

Gasparotto

Cebim

Góes

et al. 2009

Journal of Applied Physics

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In this work we studied the structural and optical properties of lithium tantalate ͑LiTaO 3 ͒ powders doped with Eu 3+ ions. We have examined the different sites occupied by the rare earth ion through the correlation of the DRX data analyzed with the Rietveld method and some spectroscopic parameters derived from the Eu 3+ luminescence. A direct relation was established between the lattice parameters and the "occupation fraction" of Eu 3+ in each LiTaO 3 site. The occupation fraction was set as the relative population of Eu 3+ ions for each site obtained by means of the intensity, baricenter, and the spontaneous emission coefficients of the 5 D 0 → 7 F 0 transitions. We concluded that the unit cell parameter a presents the same behavior of the Eu 3+ occupation fraction in Ta 5+ sites as a function of the Eu 3+ content in LiTaO 3 . The same was observed for the variation in Eu 3+ occupation fraction in the Li + site and the unit cell parameter c with the Eu 3+ content.

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“…There are a few studies on the luminescent properties of rare earth doped columbite transition metal niobate compounds in the literature [2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%