Research output: Contribution to journal › Article › peer-review
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.
Original language | English |
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Pages (from-to) | 579-588 |
Number of pages | 10 |
Journal | Applied Magnetic Resonance |
Volume | 50 |
Issue number | 4 |
DOIs | |
State | Published - 1 Apr 2019 |
ID: 35269602