| 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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Roiland, Claire
Institut des Sciences Chimiques de Rennes
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2022Investigation of Intermetallic Energy Transfers in Lanthanide Coordination Polymers Molecular Alloys: Case Study of Trimesate-Based Compoundscitations
- 2022Investigation of Intermetallic Energy Transfers in Lanthanide Coordination Polymers Molecular Alloys: Case Study of Trimesate-Based Compoundscitations
- 2022Aggregation-induced Emission Fluorophore Doped Phosphate Glass: Toward Light-emitting Electrochemical Cellscitations
- 2021Aggregation-induced Emission Fluorophore Doped Phosphate Glass: Toward Light-emitting Electrochemical Cellscitations
- 2021Structure of Ga-Sb-Se glasses by combination of 77Se NMR and neutron diffraction experiments with molecular dynamics ; Structure des verres Ga-Sb-Se par combinaison d’expériences de RMN 77Se et de diffraction neutronique avec la dynamique moléculairecitations
- 2021Structure of Ga-Sb-Se glasses by combination of 77 Se NMR and neutron diffraction experiments with molecular dynamicscitations
- 2020Luminescence properties of lanthanide complexes-based molecular alloyscitations
- 2020Luminescence properties of lanthanide complexes-based molecular alloyscitations
- 2019Risedronate Effects on the In Vivo Bioactive Glass Behavior Nuclear Magnetic Resonance and Histopathological Studiescitations
- 2018Lord of The Crowns A New Precious in the Kingdom of Clustomesogenscitations
- 2018Direct Integration of Red-NIR Emissive Ceramic-like AnM6Xi8Xa6 Metal Cluster Salts in Organic Copolymers Using Supramolecular Interactionscitations
- 201745Sc and 67Zn NMR studies in Tsai-type quasicrystal and approximant.
- 2016Structural study by Raman spectroscopy and 77Se NMR of GeSe4 and 80GeSe2–20Ga2Se3 glasses synthesized by mechanical millingcitations
- 2015Structure of Arsenic Selenide Glasses Studied by NMR: Selenium Chain Length Distributions and the Flory Modelcitations
- 2015Influence of P2O5 and Al2O3 content on the structure of erbium-doped borosilicate glasses and on their physical, thermal, optical and luminescence propertiescitations
- 2015Processing and characterization of novel borophosphate glasses and fibers for medical applicationscitations
- 2015Influence of P₂O₅ and Al₂O₃ content on the structure of erbium-doped borosilicate glasses and on their physical, thermal, optical and luminescence properties
- 2014A combined 77Se NMR and molecular dynamics contribution to the structural understanding of the chalcogenide glassescitations
- 2014A combined 77Se NMR and molecular dynamics contribution to the structural understanding of the chalcogenide glassescitations
- 2012Initial stage of physical ageing in network glassescitations
- 2012Fragile-strong behavior in the AsxSe1-x glass forming system in relation to structural dimensionalitycitations
- 2010Correlation between structure and physical properties of chalcogenide glasses in the AsxSe1-x systemcitations
- 2006Triple-quantum correlation NMR experiments in solids using J-couplingscitations
Places of action
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article
Fragile-strong behavior in the AsxSe1-x glass forming system in relation to structural dimensionality
Abstract
International audience ; A series of physical properties have been measured throughout and above the glass transition for the whole AsxSe1-x system, including the activation for viscous flow E-eta, the activation energy for enthalpy relaxation EH, and the activation energy for structural relaxation E-a obtained by specific heat spectroscopy. All properties show a double minimum at an average coordination number < r > = 2.3 and < r > = 2.5 with a local maximum at < r > = 2.4. This is in stark contrast to the physical properties previously measured on the same samples at room temperature and which instead show a single minimum centered at < r > = 2.4. The observed trend is consistent with the dimensionality of the network derived from structural data obtained by nuclear magnetic resonance. An analysis of the complex heat capacity also reveals a bimodal relaxation process in As-rich glasses, which explains why they are kinetically fragile but appear thermodynamically strong. Finally, these results demonstrate that previous observations of an ''intermediate phase'' in AsxSe1-x glasses near < r > = 2.3 is associated with the high temperature behavior of the glassy network and should be interpreted in terms of the temperature dependence of structural constraints rather than the number of constraints in the room-temperature glass.