Synthesis and NMR investigation of 2D nanocrystals of the LaF3 doped by SrF2
| Autor: | Alexei F. Privalov, Valeri P. Tolstoy, Max Schäfer, Igor V. Murin, Larisa B. Gulina, Michael Vogel |
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| Rok vydání: | 2016 |
| Předmět: |
Chemistry
Orders of magnitude (temperature) Diffusion Organic Chemistry Doping Analytical chemistry Nanotechnology 02 engineering and technology Crystal structure 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 0104 chemical sciences law.invention Inorganic Chemistry Nanocrystal Magazine law Environmental Chemistry Physical and Theoretical Chemistry 0210 nano-technology Science technology and society Order of magnitude |
| Zdroj: | Journal of Fluorine Chemistry. 188:185-190 |
| ISSN: | 0022-1139 |
| Popis: | Nanostructured superionic conductor LaF 3 doped by SrF 2 is obtained in the first time using the synthesis at the solution–gas interface. The product composition La 1-x Sr x F 3-x (0 ≤ 0.16) was analyzed using SEM, FT-IR, XRD and EPM. It consists of nanosheets aggregated in microtubes. The SrF 2 content is varied from 2 mol% to 16 mol%. XRD analysis indicates tysonite crystal structure, which is still preserved up to 1000 K. NMR diffusometry has shown a significant enhancement of the diffusion coefficient, which is at least one order of magnitude higher than for undoped nanosized LaF 3 and about 3 orders of magnitude higher than for bulk LaF 3 at temperatures around 800 K. |
| Databáze: | OpenAIRE |
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