Diffusive dynamics in an amorphous superionic conductor

Christoph Tietz; Tobias Michael Fritz; Katharina Holzweber; Michael Legenstein; Michael Leitner; Bogdan Sepiol

doi:10.1103/PhysRevResearch.2.043141

Diffusive dynamics in an amorphous superionic conductor

Titel in Übersetzung: Diffusive Dynamik in einem amorphen schnellen Ionenleiter

Christoph Tietz (Korresp. Autor*in), Tobias Michael Fritz, Katharina Holzweber, Michael Legenstein, Michael Leitner, Bogdan Sepiol

Dynamik Kondensierter Systeme

Veröffentlichungen: Beitrag in Fachzeitschrift › Artikel › Peer Reviewed

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.

Titel in Übersetzung	Diffusive Dynamik in einem amorphen schnellen Ionenleiter
Originalsprache	Englisch
Aufsatznummer	043141
Seitenumfang	10
Fachzeitschrift	Physical Review Research
Jahrgang	2
Ausgabenummer	4
DOIs	https://doi.org/10.1103/PhysRevResearch.2.043141
Publikationsstatus	Veröffentlicht - 27 Okt. 2020

ÖFOS 2012

103015 Kondensierte Materie
103018 Materialphysik
103009 Festkörperphysik

Schlagwörter

aXPCS
Röntgenphotonenkorrelationsspektroskopie
Atomare Diffusion
schnelle ionenleiter
Alkaliboratgläser

Zugriff auf Dokument

10.1103/PhysRevResearch.2.043141Lizenz: CC BY 4.0

Andere Dateien und Links

Verknüpfung zur Publikation in Scopus

1 Abgeschlossen

Diffusion in Gläsern untersucht mittels Röntgenkorrelationsspektroskopie
Sepiol, B. & Simon, Y.
1/01/16 → 31/05/20
Projekt: Forschungsförderung

1 Artikel

Beam-induced atomic motion in alkali borate glasses
Titel in Übersetzung: Strahlinduzierte atomare Bewegung in AlkaliboratgläsernHolzweber, K., Tietz, C., Fritz, T. M., Leitner, M. & Sepiol, B., 10 Dez. 2019, in: Physical Review B. 100, 21, 9 S., 214305.
Veröffentlichungen: Beitrag in Fachzeitschrift › Artikel › Peer Reviewed

Open Access

Zitationsweisen

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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.",

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AU - Leitner, Michael

AU - Sepiol, Bogdan

N1 - Publisher Copyright: © 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

PY - 2020/10/27

Y1 - 2020/10/27

N2 - 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.

AB - 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.

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KW - ION

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KW - AC CONDUCTIVITY

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Diffusive dynamics in an amorphous superionic conductor

Abstract

ÖFOS 2012

Schlagwörter

Zugriff auf Dokument

Andere Dateien und Links

Fingerprint

Projekte

Diffusion in Gläsern untersucht mittels Röntgenkorrelationsspektroskopie

Publikationen

Beam-induced atomic motion in alkali borate glasses

Zitationsweisen