Eu oxidation state in fluorozirconate-based glass ceramics

Journal Article · Mon Nov 30 23:00:00 EST 2009 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3259390· OSTI ID:21359372

Henke, B ^[1]; Passlick, C ^[2]; Keil, P ^[3]; Johnson, J A ^[4]; Schweizer, S ^[5]

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1. Fraunhofer Center for Silicon Photovoltaics, Walter-Huelse-Str. 1, 06120 Halle (Germany)
2. Department of Physics, Faculty of Science, University of Paderborn, Warburger Str. 100, 33098 Paderborn (Germany)
3. Department of Interface Chemistry and Surface Engineering, Max-Planck Institut fuer Eisenforschung GmbH, Max-Planck-Str. 1, 40237 Duesseldorf (Germany)
4. Department of Materials Science and Engineering, University of Tennessee Space Institute, Tullahoma, Tennessee 37388 (United States)
5. Fraunhofer Center for Silicon Photovoltaics, Walter-Huelse-Str. 1, 06120 Halle (Germany) and Institute of Physics, Martin Luther University of Halle-Wittenberg, Heinrich-Damerow-Str. 4, 06120 Halle (Germany)

The influence of InF{sub 3} doping and remelting on Eu-doped fluorozirconate-based glass ceramics was investigated using near-edge x-ray absorption and optical spectroscopy. It was found that the addition of InF{sub 3} to the melt decreases the Eu{sup 2+}/Eu{sup 3+} mole ratio, while remelting leads to a significant change in the Eu{sup 2+}/Eu{sup 3+} ratio in favor of Eu{sup 2+}. Photoluminescence spectroscopy shows that additional annealing steps lead to the formation of BaCl{sub 2} nanoparticles in the glass. In as-made glass ceramics containing InF{sub 3}, a phase transition of the nanoparticles from hexagonal to orthorhombic structure is observed. This phase transition is not observed in the remelted glasses studied here.

• OSTI ID: 21359372
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 106; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION
ABSORPTION SPECTROSCOPY
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM CHLORIDES
BARIUM COMPOUNDS
CERAMICS
CHARGED PARTICLES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DOPED MATERIALS
EMISSION
EUROPIUM IONS
FLUORIDES
FLUORINE COMPOUNDS
GLASS
HALIDES
HALOGEN COMPOUNDS
HEAT TREATMENTS
INDIUM COMPOUNDS
INDIUM FLUORIDES
INFRARED SPECTRA
IONS
LUMINESCENCE
MATERIALS
MELTING
NANOSTRUCTURES
ORTHORHOMBIC LATTICES
OXIDATION
PARTICLES
PHASE TRANSFORMATIONS
PHOTOLUMINESCENCE
PHOTON EMISSION
SORPTION
SPECTRA
SPECTROSCOPY
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA
X-RAY SPECTROSCOPY