dc.identifier.uri |
http://dx.doi.org/10.15488/2253 |
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dc.identifier.uri |
http://www.repo.uni-hannover.de/handle/123456789/2279 |
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dc.contributor.author |
Wilkening, Martin
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dc.contributor.author |
Küchler, W.
|
|
dc.contributor.author |
Heitjans, Paul
|
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dc.date.accessioned |
2017-11-10T17:50:57Z |
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dc.date.available |
2017-11-10T17:50:57Z |
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dc.date.issued |
2006 |
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dc.identifier.citation |
Wilkening, M.; Küchler, W.; Heitjans, P.: From ultraslow to fast lithium diffusion in the 2D ion conductor Li0.7TiS2 probed directly by stimulated-echo NMR and nuclear magnetic relaxation. In: Physical Review Letters 97 (2006), Nr. 6, 65901. DOI: https://doi.org/10.1103/PhysRevLett.97.065901 |
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dc.description.abstract |
7Li stimulated-echo NMR and classical relaxation NMR techniques are jointly used for the first time for a comprehensive investigation of Li diffusion in layer-structured Li0.7TiS2. One single 2D Li diffusion process was probed over a dynamic range of almost 10 orders of magnitude. So far, this is the largest dynamic range being measured by 7Li NMR spectroscopy directly, i.e., without the help of a specific theoretical model. The jump rates obey a strict Arrhenius law, determined by an activation energy of 0.41(1) eV and a preexponential factor of 6.3(1)×1012 s−1, and range between 1×10−1 s−1 and 7.8×108 s−1 (148–510 K). Ultraslow Li jumps in the kHz to sub-Hz range were measured directly by recording 7Li spin-alignment correlation functions. The temperature and, in particular, the frequency dependence of the relaxation rates fully agree with results expected for 2D diffusion. © 2006 The American Physical Society. |
eng |
dc.language.iso |
eng |
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dc.publisher |
College Park, ML : American Physical Society |
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dc.relation.ispartofseries |
Physical Review Letters 97 (2006), Nr. 6 |
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dc.rights |
Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. |
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dc.subject |
Activation energy |
eng |
dc.subject |
Correlation methods |
eng |
dc.subject |
Diffusion |
eng |
dc.subject |
Mathematical models |
eng |
dc.subject |
Natural frequencies |
eng |
dc.subject |
Nuclear magnetic resonance spectroscopy |
eng |
dc.subject |
Arrhenius law |
eng |
dc.subject |
Ion conductors |
eng |
dc.subject |
Lithium diffusion |
eng |
dc.subject |
Nuclear magnetic relaxation |
eng |
dc.subject |
Lithium compounds |
eng |
dc.subject.ddc |
530 | Physik
|
ger |
dc.title |
From ultraslow to fast lithium diffusion in the 2D ion conductor Li0.7TiS2 probed directly by stimulated-echo NMR and nuclear magnetic relaxation |
eng |
dc.type |
Article |
|
dc.type |
Text |
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dc.relation.issn |
00319007 |
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dc.relation.doi |
https://doi.org/10.1103/PhysRevLett.97.065901 |
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dc.bibliographicCitation.issue |
6 |
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dc.bibliographicCitation.volume |
97 |
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dc.bibliographicCitation.firstPage |
65901 |
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dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
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