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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Sarou-Kanian, Vincent
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Topics
Publications (11/11 displayed)
- 2024Crystallization Mechanisms in New Bismuth Borotellurite Glass-Ceramicscitations
- 2023Operando nuclear magnetic resonance spectroscopy: Detection of the onset of metallic lithium deposition on graphite at low temperature and fast charge in a full Li-ion batterycitations
- 2023Resolved-detrimental langasite-type surface crystallization in yttrium lanthanum gallium-rich heavy metal oxide glasses for infra-red optical fiber applications
- 2023Resolved‐detrimental surface crystallization in yttrium lanthanum gallate glasses for optical fiber applicationscitations
- 2020A comprehensive study of the glass/translucent anti-glass/transparent ceramic structural ordering in the Bi2O3Nb2O5–TeO2 systemcitations
- 2020La2Ga3O7.5: a metastable ternary melilite with a super-excess of inter- stitial oxide ions synthesized by direct crystallization of the meltcitations
- 2019Deconvolution method of $^{29}$Si MAS NMR spectra applied to homogeneous and phase separated lanthanum aluminosilicate glassescitations
- 2019Highly Transparent Fluorotellurite Glass-Ceramics: Structural Investigations and Luminescence Propertiescitations
- 2014Temperature Dependent 4-, 5- and 6-Fold Coordination of Aluminum in MOCVD-Grown Amorphous Alumina Films: From Local Coordination to Material Propertiescitations
- 2013Temperature-Dependent 4‑, 5- and 6‑Fold Coordination of Aluminum in MOCVD-Grown Amorphous Alumina Films: A Very High Field 27Al-NMR studycitations
- 2003Experimental study of the aluminum droplet combustion under forced convection. Influence of the gaseous atmosphere
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article
Highly Transparent Fluorotellurite Glass-Ceramics: Structural Investigations and Luminescence Properties
Abstract
International audience ; Crystallization from glass can lead to the stabilization of metastable crystalline phases, which offers an interesting way to unveil novel compounds and control the optical properties of resulting glass-ceramics. Here, we report on a crystallization study of the ZrF4-TeO2 glass system and show that under specific synthesis conditions, a previously unreported Te0.47Zr0.53OxFy zirconium oxyfluorotellurite antiglass phase can be selectively crystallized at the nanometric scale within the 65TeO2-35ZrF4 amorphous matrix. This leads to highly transparent glass-ceramics in both the visible and near-infrared ranges. Under longer heat treatment, the stable cubic ZrTe3O8 phase crystallizes in addition to the previous unreported antiglass phase. The structure, microstructure, and optical properties of 65TeO2-35ZrF4Tm3+-doped glass-ceramics, were investigated in detail by means of X-ray diffraction, scanning and transmission electron microscopies, and 19F, 91Zr, and 125Te NMR, Raman, and photoluminescence spectroscopies. The crystal chemistry study of several single crystals samples by X-ray diffraction evidence that the novel phase, derived from α-UO3 type, corresponds in terms of long-range ordering inside this basic hexagonal/trigonal disordered phase (antiglass) to a complex series of modulated microphases rather than a stoichiometric compound with various superstructures analogous to those observed in the UO3–U3O8 subsystem. These results highlight the peculiar disorder–order phenomenon occurring in tellurite materials.