| 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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Liu, Hao
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2024Understanding the Electrochemical Reaction Mechanism of the Co/Ni Free Layered Cathode Material P2–Na$_{2/3}$Mn$_{7/12}$Fe$_{1/3}$Ti$_{1/12}$O$_{2}$ for Sodium-Ion Batteries
- 2024Inverse design of a pyrochlore lattice of DNA origami through model-driven experimentscitations
- 2024Understanding the Electrochemical Reaction Mechanism of the Co/Ni Free Layered Cathode Material P2–Na$_{2/3}$Mn$_{7/12}$Fe$_{1/3}$Ti$_{1/12}$O$_2$ for Sodium-Ion Batteriescitations
- 2020Thermal and kinetic analysis of diverse biomass fuels under different reaction environment: a way forward to renewable energy sourcescitations
- 2018Nano-phase separation and structural ordering in silica-rich mixed network former glassescitations
- 2010Influence of Ni Catalyst Layer and TiN Diffusion Barrier on Carbon Nanotube Growth Rate
Places of action
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article
Nano-phase separation and structural ordering in silica-rich mixed network former glasses
Abstract
We investigate the structure, phase separation, glass transition, and crystallization in a mixed network former glass series, i.e., B 2 O 3 -Al 2 O 3 -SiO 2 -P 2 O 5 glasses with varying SiO 2 /B 2 O 3 molar ratio. All the studied glasses exhibit two separate glassy phases: droplet phase (G 1 ) with the size of 50-100 nm and matrix phase (G 2 ), corresponding to a lower calorimetric glass transition temperature (T g1 ) and a higher one (T g2 ), respectively. Both T g values decrease linearly with the substitution of B 2 O 3 for SiO 2 , but the magnitude of the decrease is larger for T g1 . Based on nuclear magnetic resonance and Raman spectroscopy results, we infer that the G 1 phase is rich in boroxol rings, while the G 2 phase mainly involves the B-O-Si network. Both phases contain BPO 4 - and AlPO 4 -like units. Ordered domains occur in G 2 upon isothermal and dynamic heating, driven by the structural heterogeneity in the as-prepared glasses. The structural ordering lowers the activation energy of crystal growth, thus promoting partial crystallization of G 2 . These findings are useful for understanding glass formation and phase separation in mixed network former oxide systems, and for tailoring their properties.