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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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Wells, Stephen
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2023Broadband infrared absorber based on a sputter deposited hydrogenated carbon multilayer enhancing MEMS-based CMOS thermopile performancecitations
- 2017Defining the flexibility window in ordered aluminosilicate zeolitescitations
- 2015GASP: software for geometric simulations of flexibility in polyhedral and molecular framework structurescitations
- 2011Flexibility windows and phase transitions of ordered and disordered ANA framework zeolitescitations
- 2009Compression behaviour and flexibility window of the analcime like feldspathoids: experimental and theoretical findingscitations
- 2008Flexibility window controls pressure-induced phase transition in analcimecitations
- 2007Local structural variability and the intermediate phase window in network glassescitations
- 2005Ionic diffusion in quartz studied by transport measurements, SIMS and atomistic simulationscitations
- 2005Total scattering and reverse Monte Carlo study of the 105 K displacive phase transition in strontium titanatecitations
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article
Local structural variability and the intermediate phase window in network glasses
Abstract
Recent experimental work has shown that the width of the intermediate phase varies considerably in chalcogenide glasses containing Ge As Se. As the chemical composition is varied within a series of glasses, three phases are observed. As the mean coordination of the glass is increased, the floppy phase evolves through the intermediate phase (rigid but unstressed) into the rigid and stressed phase. Here, using an extensive study of computer-generated networks, we show that the intermediate phase is caused by self-organization. This is only possible on networks where the single transition, from the floppy to the rigid and stressed phase, is second order in the absence of self-organization, which leads the network to be responsive to self-organization. This occurs when the structural variability-a measure of inhomogeneities within the glasses-exceeds a threshold value. The width of the intermediate phase is associated with the local structural variability. Above the threshold value, a large structural variability leads to a wider intermediate phase, which we refer to as the intermediate phase window.