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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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Sepiol, Bogdan
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2020Diffusive dynamics in an amorphous superionic conductor
- 2019Beam-induced atomic motion in alkali borate glassescitations
- 2017Sound of Matter
- 2016Chemical ordering beyond the superstructure in long-range ordered systemscitations
- 2016Chemical ordering beyond the superstructure in long-range ordered systemscitations
- 2016Study of atomic motion in rubidium borate glasses
- 2015Atomic motion in metallic glass studied by coherent X-rays
- 2013Studies of atomic scale diffusion by x-ray photon correlation spectroscopy
- 2013Studies of atomic scale diffusion by quasielastic Mößbauer spectroscopy and x-ray photon correlation spectroscopy
- 2007Depth dependence of iron diffusion in Fe3Si studied with nuclear resonant scattering
- 2007Coherent x-ray diffraction imaging of grown-in antiphase boundaries in Fe65 Al35citations
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article
Diffusive dynamics in an amorphous superionic conductor
Abstract
The fast diffusion of alkali ions and resulting high ionic conductivity is a defining feature of alkali borate glasses. Here we report impedance spectroscopy and atomic-scale x-ray photon correlation spectroscopy measurements on rubidium borate systems (Rb2O)x(B2O3)100−x with particular focus on x=30mol %. We find that the coherently scattered intensity does not show temporal fluctuations on timescales corresponding to ionic diffusion. We conclude that the spatial configuration of alkali sites as stepping stones for ionic diffusion evolves on the same timescales as the borate backbone, and that the defect density is low, i.e., at a given instant, nearly all alkali sites are singly occupied.