Luminescence properties of Pr3+ and Sm3+ ions in natural apatites

Czaja, M.; Bodył, S.; Lisiecki, Radosław; Mazurak, Z.

doi:10.1007/s00269-009-0344-9

Cited by 11 publications

(5 citation statements)

References 13 publications

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“…When the Sm 3 þ ions were excited to the 6 P 3/2 level, the population first relaxes to the 4 G 5/2 level by non-radiative relaxation and then come to different ground state levels of 6 H J (J ¼ 5/2, 7/2, 9/2, and 11/2) at 560, 596, 647, and 705 nm, respectively, by radiative emissions [28]. All these peaks were almost similar to the previous reports of Sm 3 þ ions doping in the apatite structured host materials [21,29]. These radiative emissions give the characteristic emission peaks of Sm 3 þ ions.…”

Section: Samplesupporting

confidence: 85%

White-light emission of Ca2La8(GeO4)6O2: Tb3+/Sm3+ nanocrystalline phosphors for solid-state lighting applications

Jeon

Bharat

2015

Journal of Luminescence

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Section: Samplesupporting

confidence: 85%

White-light emission of Ca2La8(GeO4)6O2: Tb3+/Sm3+ nanocrystalline phosphors for solid-state lighting applications

Jeon

Bharat

2015

Journal of Luminescence

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“…The most efficient Sm 3+ luminescence is usually measured for λ exc = 399, 402, 406, or 408 nm (Czaja et al, 2008;Bodył et al, 2009;Czaja et al, 2009 (Table 3). However, excitation measurements unequivocally connected the emission spectra to each ion.…”

Section: Resultsmentioning

confidence: 99%

Steady-state luminescence measurement for qualitative identification of rare earth ions in minerals

Czaja

Bodył-Gajowska

Mazurak

2013

Journal of Mineralogical and Petrological Sciences

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Minerals are the source of rare earth elements (REE), and knowledge of the amount of REE in different minerals is necessary for a mineralogist. We propose steady -state luminescence measurement as a quick and non -destructive method for detecting several lanthanide ions present together in the same sample. By using excitation and emission spectra of each 4f ion, rare earth ions could be easily identified.

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“…Luminescence of apatites has been extensively studied for a long time (Blasse 1975). Waychunas (2002) and Gaft et al (2015) made comprehensive reviews while other studies were dedicated to the specific luminescence resulting from Eu (Kottaisamy et al 1994;Gaft et al 1997), or more generally to the REE luminescence patterns overall (Reisfeld et al 1996;Czaja et al 2010). Other studies have been dedicated to other emission centers in apatite such as U 6+ and (UO 2 ) 2+ (Panczer et al 1998) or Mn 2+ (Gaft et al 2015).…”

Section: An Overview On Raman and Luminescence In Apatitementioning

confidence: 99%

“…There is no easy interpretation for this difference in luminescence behavior but likely there is a complex interplay between the various activators in the natural samples involving a sensitizing and/or quenching processes for luminescence among the REE and/or with other activators. For instance, using time-resolved spectroscopy, Czaja et al (2010) demonstrated the effective energy transfer between Pr 3+ and Sm 3+ in natural apatites and showed its effect on the lifetime of emission luminescence from these crystals. Such effects are absent in the synthetic hydroxylapatites, which are doped with a single REE activator.…”

Section: Interpretation Of the Luminescence Lifetimementioning

confidence: 99%

Time-resolved Raman and luminescence spectroscopy of synthetic REE-doped hydroxylapatites and natural apatites

Fau

Beyssac

Gauthier

et al. 2022

American Mineralogist

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Using continuous and time-resolved spectroscopy, we investigate Raman and luminescence signals from synthetic hydroxylapatites doped with trivalent REE including Dy 3+ , Eu 3+ , Nd 3+ , and Sm 3+ , as well as REE in natural apatites, with laser excitations at 532 nm and 785 nm. We demonstrate that time-resolved spectroscopy is an extremely efficient method to tone down the luminescence from Raman spectra or, alternatively, to investigate the luminescence signal without the interference from the Raman contribution. Time-resolved luminescence spectroscopy is found to be a powerful technique for generating specific high-quality luminescence spectra for the REE emission activators in apatites by using appropriate combinations of delay and gate width for the time synchronization of the laser pulse and ICCD detector. This allows for the unambiguous detection and identification of the activators by avoiding the overlapping of various emission signals in the luminescence spectra. This is particularly useful in the case of natural samples, which often have several activators for luminescence. In the case of synthetic REE-doped apatites, a quenching process for luminescence due to activator concentration is seen for Eu 3+ and Sm 3+ , i.e. the higher the concentration, the shorter the luminescence decay time. The interpretation of luminescence decay time in natural apatites is promising but more complex because of energy transfers between the various luminescence activators present in the crystal lattice. Luminescence is a powerful technique for detecting the presence of REE in apatites down to ppm levels, though quantifying the concentration is still a challenge.

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Luminescence properties of Pr3+ and Sm3+ ions in natural apatites

Cited by 11 publications

References 13 publications

White-light emission of Ca2La8(GeO4)6O2: Tb3+/Sm3+ nanocrystalline phosphors for solid-state lighting applications

White-light emission of Ca2La8(GeO4)6O2: Tb3+/Sm3+ nanocrystalline phosphors for solid-state lighting applications

Steady-state luminescence measurement for qualitative identification of rare earth ions in minerals

Time-resolved Raman and luminescence spectroscopy of synthetic REE-doped hydroxylapatites and natural apatites

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