Influence of Morphology of LaF3 Nano-crystals on Fluorine Dynamics Studied by NMR Diffusometry
- Авторлар: Gulina L.1, Schikora M.2, Privalov A.2, Weigler M.2, Tolstoy V.1, Murin I.1, Vogel M.2
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Мекемелер:
- Institute of Chemistry, Saint Petersburg State University
- Institut für Festkörperphysik, Technische Universität Darmstadt
- Шығарылым: Том 50, № 4 (2019)
- Беттер: 579-588
- Бөлім: Original Paper
- URL: https://journals.rcsi.science/0937-9347/article/view/248285
- DOI: https://doi.org/10.1007/s00723-018-1077-z
- ID: 248285
Дәйексөз келтіру
Аннотация
Ionic dynamics in nano-structured 2D superionic conductors LaF3 obtained by a synthesis at the gas–solution interface has been analyzed using 19F NMR Static Field Gradient (SFG) diffusometry in a temperature
range up to 800 K. The fluorine diffusion in 2D materials is significantly higher as compared to that in bulk LaF3 and is strongly dependent on the nano-crystalline sheet thickness. Its decrease from 18 nm to 6 nm leads to an increase of mobility by almost two orders of magnitude, resulting in an overall mobility enhancement of more than three orders of magnitude compared to mono-crystalline LaF3. Moreover, the activation energy is reduced from 1.2 eV for mono-crystals to 0.23 eV for 6 nm thin nano-crystalline powder samples.
Авторлар туралы
L. Gulina
Institute of Chemistry, Saint Petersburg State University
Хат алмасуға жауапты Автор.
Email: l.gulina@spbu.ru
ORCID iD: 0000-0002-1622-4311
Ресей, 7/9 Universitetskaya nab, St. Petersburg, 199034
M. Schikora
Institut für Festkörperphysik, Technische Universität Darmstadt
Email: alexei.privalov@physik.tu-darmstadt.de
Германия, Hochschulstraße 6, Darmstadt, 64289
A. Privalov
Institut für Festkörperphysik, Technische Universität Darmstadt
Хат алмасуға жауапты Автор.
Email: alexei.privalov@physik.tu-darmstadt.de
Германия, Hochschulstraße 6, Darmstadt, 64289
M. Weigler
Institut für Festkörperphysik, Technische Universität Darmstadt
Email: alexei.privalov@physik.tu-darmstadt.de
Германия, Hochschulstraße 6, Darmstadt, 64289
V. Tolstoy
Institute of Chemistry, Saint Petersburg State University
Email: alexei.privalov@physik.tu-darmstadt.de
ORCID iD: 0000-0003-3857-7238
Ресей, 7/9 Universitetskaya nab, St. Petersburg, 199034
I. Murin
Institute of Chemistry, Saint Petersburg State University
Email: alexei.privalov@physik.tu-darmstadt.de
ORCID iD: 0000-0003-1869-7590
Ресей, 7/9 Universitetskaya nab, St. Petersburg, 199034
M. Vogel
Institut für Festkörperphysik, Technische Universität Darmstadt
Email: alexei.privalov@physik.tu-darmstadt.de
Германия, Hochschulstraße 6, Darmstadt, 64289