Spectral evolution of Eu{sup 3+} doped Y{sub 3}NbO{sub 7} niobate induced by temperature

Journal Article · Tue Mar 15 04:00:00 EDT 2016 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2015.12.023· OSTI ID:22577799

Kim, K-Y.; Durand, A. ^[1]; Heintz, J-M.; Veillere, A. ^[1]

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1. CNRS, ICMCB, UPR 9048, F-33600 Pessac (France)

A Eu{sup 3+} doped Y{sub 3}NbO{sub 7} niobate powder was synthetized using a polymerizable complex route. It gave rise to nanometric particles that crystallized in the fluorine structure, corresponding to the Y{sub 3}NbO{sub 7} phase. The thermal evolution of this powder was followed up to 1600 °C, using X-ray diffraction and optical characterizations. The fluorine structure was maintained in the whole temperature range. However, spectral evolution of the samples calcined above 900 °C showed a more complex situation. Emission spectra of powders heat treated at different temperatures showed an evolution of the emission lines that can be attributed first to a better crystallization of the niobate phase and second to its partial decomposition in favor of the formation of YNbO{sub 4} and Y{sub 2}O{sub 3}. Although the Y{sub 3}NbO{sub 7} phase appeared stable up to 1650 °C, from X-ray diffraction analysis, spectral analysis showed that the local environment of the doping element is modified from 1100 °C. - Graphical abstract: Spectral evolution of Eu{sup 3+} doped Y{sub 3}NbO{sub 7} niobate induced by temperature.

• OSTI ID: 22577799
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Vol. 235; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
CRYSTALLIZATION
DECOMPOSITION
DOPED MATERIALS
EMISSION SPECTRA
EUROPIUM IONS
FLUORINE
HEAT TREATMENTS
LUMINESCENCE
NANOSTRUCTURES
NIOBATES
PARTICLES
POWDERS
SOLID SOLUTIONS
SOLIDS
TEMPERATURE RANGE
X RADIATION
X-RAY DIFFRACTION
YTTRIUM OXIDES