| People | Locations | Statistics |
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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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Genevois, Cecile
Conditions Extrêmes et Matériaux Haute Température et Irradiation
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Topics
Publications (12/12 displayed)
- 2023Towards new zero-thermal-expansion materials: Li-free quartz solid solutions stuffed with transition metal cationscitations
- 2023Silicon Oxynitride Coatings Are Very Promising for Inert and Durable Pharmaceutical Glass Vialscitations
- 2022Towards new zero-thermal-expansion materials: Li-free quartz solid solutions stuffed with transition metal cations
- 2022Highly transparent bismuth borotellurite glass-ceramics: Comprehension of crystallization mechanismscitations
- 2019Persistent energy transfer in ZGO:Cr3+,Yb3+: a new strategy to design nano glass-ceramics featuring deep red and near infrared persistent luminescencecitations
- 2015Transparency through Structural Disorder: A New Concept for Innovative Transparent Ceramicscitations
- 2015Structure of Arsenic Selenide Glasses Studied by NMR: Selenium Chain Length Distributions and the Flory Modelcitations
- 2014Long-lasting luminescent ZnGa2O4:Cr3+ transparent glass-ceramicscitations
- 2014Chromium enrichment on the habit plane of dislocation loops in ion-irradiated high-purity Fe-Cr alloyscitations
- 2013Characterisation of Cr, Si and P distribution at dislocations and grain-boundaries in neutron irradiated Fe–Cr model alloys of low puritycitations
- 2012Atomic scale observation of phase separation and formation of silicon clusters in Hf higk-κ silicatescitations
- 2011Effect of neutron-irradiation on the microstructure of a Fe–12at.%Cr alloycitations
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article
Highly transparent bismuth borotellurite glass-ceramics: Comprehension of crystallization mechanisms
Abstract
Understanding the mechanism at play during the partial crystallization of a parent glass remains crucial for controlling the optical properties of the final glass-ceramics. In this work, we study the crystallization of bismuth borotellurite glasses, where a specific investigation on the 60TeO2–20B2O3–20Bi2O3 composition is reported. Under adapted heat treatment conditions, highly transparent glass-ceramics can be obtained: the crystallization of the unique anti-glass Bi2Te4O11 phase is evidenced by X-ray diffraction and Raman spectroscopy data confirm its disordered nature. While the quenched glass appears homogeneous, the observation of the early stages glass-ceramic samples by transmission electron microscopy reveals the formation of isolated polycrystalline Bi2Te4O11 entities scattered in a predominant glassy matrix. However, longer heat-treatment of samples induce some chemical demixtion of the residual glass matrix, where two separate amorphous regions of a different composition coexist. The resulting material is finally constituted of the aforementioned Bi2Te4O11 polycrystalline clusters dispersed within a majority of regions with a Te/Bi ratio larger than the nominal 1.5 ratio, separated by tiny “venules” strongly impoverished in tellurium and also likely containing boron element. Photoluminescence properties of Eu3+-doped samples indicate that tiny spectral and temporal modifications happen with the crystallization, reflecting the persistent disordered surrounding of the rare-earth ions. © 2022