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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
Compression behaviour and flexibility window of the analcime like feldspathoids: experimental and theoretical findings
Abstract
The analcime-like feldspathoids are a group of microporous minerals with the ANA framework topology. Analcime proper has predominantly Na as its channel cation content, while leucite contains predominantly K and wairakite contains Ca. Under compression, all three minerals display structural phase transitions to lower-symmetry forms. In cubic analcime the phase transition occurs at a relatively low pressure (1 GPa). Our recent theoretical study using geometric simulation indicates that this phase transition is controlled by the flexibility window of the ANA framework. The flexibility window is defined as the range of<br/>‘‘framework densities’’ over which the tetrahedral units of the framework can in principle be made geometrically ideal. In leucite and wairakite the ambient-pressure structure is more distorted than in analcime, due to the different cation content, and their subsequent phase transitions occur at higher pressures (2–3 GPa). We discuss the experimental data for these minerals and its relationship to the theoretical flexibility of the ANA framework and to the influence of cation content.