Correlation between Luminescence and EPR Spectroscopy as Evidence of Ytterbium Pair Formation in Li(6) Ln(BO(3) )(3) :Yb(3+) (Ln=Gd, Y) Borate Single Crystals.
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | JUBERA, Veronique | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CHAVOUTIER, Marie | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| hal.structure.identifier | Institute for Problems of Material Science | |
| dc.contributor.author | ARTEMENKO, Alla | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | VEBER, Philippe | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | VELAZQUEZ, Matias | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GARCIA, Alain | |
| dc.date.issued | 2011 | |
| dc.identifier.issn | 1439-4235 | |
| dc.description.abstractEn | Synthesized powders and grown single crystals of nominal compositions Li(6) Ln(BO(3) )(3) :Yb(3+) (Ln=Y, Gd) were investigated by means of powder and single-crystal X-ray diffraction (XRD), as well as optical near-IR spectroscopy in conjunction with electron paramagnetic resonance (EPR) spectroscopy. The appearance of two distinct zero-phonon lines suggests the existence of two kinds of Yb(3+) ions in the single crystals. The XRD results exclude the possibility of a phase transition occurring between room and low temperatures. EPR spectra of single crystals show the presence of both isolated ions and pairs of ytterbium ions substituted for Y(3+) . A strong temperature dependence of the intensity of Yb-Yb pairs resonance lines coincides with temperature dependence of emission peak at 978 nm, confirming a common origin of the defect giving rise to these spectra. Calculated from EPR spectra, the distance between pairs of Yb(3+) is in good agreement with crystallographic ones: R=3.856 Å, R(cryst) =3.849 Å. | |
| dc.language.iso | en | |
| dc.publisher | Wiley-VCH Verlag | |
| dc.title.en | Correlation between Luminescence and EPR Spectroscopy as Evidence of Ytterbium Pair Formation in Li(6) Ln(BO(3) )(3) :Yb(3+) (Ln=Gd, Y) Borate Single Crystals. | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1002/cphc.201100059 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | ChemPhysChem | |
| bordeaux.page | 1288-1293 | |
| bordeaux.volume | 12 | |
| bordeaux.issue | 7 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00593855 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00593855v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=ChemPhysChem&rft.date=2011&rft.volume=12&rft.issue=7&rft.spage=1288-1293&rft.epage=1288-1293&rft.eissn=1439-4235&rft.issn=1439-4235&rft.au=JUBERA,%20Veronique&CHAVOUTIER,%20Marie&ARTEMENKO,%20Alla&VEBER,%20Philippe&VELAZQUEZ,%20Matias&rft.genre=article |
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