Tuning the composition of rare earth sesquioxides Gd2-xLaxO3:Eu3+ to control phase transitions at a high temperature to design new highly sensitive luminescence-based thermal sensors
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | SALEK, Guillaume | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DEVOTI, Alexis | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GARCIA, Alain | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GAUDON, Manuel | |
| 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 | DEMOURGUES, Alain | |
| dc.date.issued | 2016 | |
| dc.description.abstractEn | The C-form (SG: Ia[3 with combining macron]) → B-form (SG: C2/m) phase transition of RE2O3 rare earth sesquioxides is described for the first time for face centred cubic–hexagonal close-packed array transformations. Based on XRD data analysis, the temperature of the C → B phase transition in Gd2−xLaxO3 compositions (0 < x < 0.5) was controlled by adjusting the Gd/La atomic ratio and varies between 1100 °C and 1400 °C. Taking into account the various environments of rare earth oxides in C and B allotropic forms, Eu3+ was used as a local probe to obtain photoluminescence spectra (emission and excitation spectra, luminescence decay time curves). The spectra significantly changed during the phase transition, which occurred within a small temperature range. Furthermore, coupling Rietveld XRD data analysis for the long-range order signature with optical emission spectroscopy to probe the local environment provides a clear view of the C → B phase transition, allowing for the design of new highly sensitive thermal sensors at high temperatures. | |
| dc.language.iso | en | |
| dc.publisher | Royal Society of Chemistry | |
| dc.title.en | Tuning the composition of rare earth sesquioxides Gd2-xLaxO3:Eu3+ to control phase transitions at a high temperature to design new highly sensitive luminescence-based thermal sensors | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1039/c6ra07607f | |
| dc.subject.hal | Chimie/Matériaux | |
| dc.subject.hal | Chimie/Chimie inorganique | |
| bordeaux.journal | RSC Advances | |
| bordeaux.page | 55298-55306 | |
| bordeaux.volume | 6 | |
| bordeaux.issue | 60 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01343948 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01343948v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=RSC%20Advances&rft.date=2016&rft.volume=6&rft.issue=60&rft.spage=55298-55306&rft.epage=55298-55306&rft.au=SALEK,%20Guillaume&DEVOTI,%20Alexis&GARCIA,%20Alain&GAUDON,%20Manuel&JUBERA,%20Veronique&rft.genre=article |
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