| 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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Salmon, Philip Stephen
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Pressure dependent structure of amorphous magnesium aluminosilicatescitations
- 2023Mapping the structural trends in zinc aluminosilicate glassescitations
- 2022Structure and related properties of amorphous magnesium aluminosilicatescitations
- 2021Structure of crystalline and amorphous materials in the NASICON system Na1+xAlxGe2- x(PO4)3citations
- 2019Ordering on different length scales in liquid and amorphous materialscitations
- 2019Structure of the intermediate phase glasses GeSe3 and GeSe4citations
- 2017Topological Ordering and Viscosity in the Glass-Forming Ge-Se System: The Search for a Structural or Dynamical Signature of the Intermediate Phasecitations
- 2017Structure of rare-earth chalcogenide glasses by neutron and x-ray diffractioncitations
- 2016Pressure-driven transformation of the ordering in amorphous network-forming materialscitations
- 2015Networks under pressurecitations
- 2015Pressure-dependent structure of the null-scattering alloy Ti0.676Zr0.324citations
- 2013Fragile glass - formers reveal their structural secrets
- 2013Identifying and characterising the different structural length scales in liquids and glasses: an experimental approachcitations
- 2011Structure of eutectic liquids in the Au-Si, Au-Ge, and Ag-Ge binary systems by neutron diffractioncitations
- 2010Structure of liquid and glassy ZnCl2citations
- 2009Atomic structure of the two intermediate phase glasses SiSe4 and GeSe4citations
- 2003Identification of the relative distribution of rare-earth ions in phosphate glassescitations
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article
Structure of the intermediate phase glasses GeSe3 and GeSe4
Abstract
The method of neutron diffraction with isotope substitution was used to measure the full set of partial pair-correlation functions for each of the network-forming glasses GeSe3 and GeSe4, which lie at the boundaries of the so-called intermediate phase in the Ge-Se system. The results show the formation of chemically ordered networks, where selenium chains are cross-linked by Ge(Se4)1/2 tetrahedra, in contrast to glassy GeSe2 where the chemical order is broken. In all of these materials, the Ge-centered structural motifs are distributed unevenly on an intermediate length scale, as indicated by the appearance of a first sharp diffraction peak in the Bhatia-Thornton concentration-concentration partial structure factor. The new experimental work provides benchmark results for guiding in the development of realistic structural models, which can be used to explore the network rigidity and other structure-related properties of the glass. In this context, there are discrepancies between experiment and the predictions of first-principles molecular dynamics simulations that are particularly marked in respect of the Ge-Ge correlation functions, which are sensitive to the connectivity of the Ge-centered structural motifs.