dc.identifier.uri |
http://dx.doi.org/10.15488/2248 |
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dc.identifier.uri |
http://www.repo.uni-hannover.de/handle/123456789/2274 |
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dc.contributor.author |
Wilkening, Martin
|
|
dc.contributor.author |
Kuhn, Alexander
|
|
dc.contributor.author |
Heitjans, Paul
|
|
dc.date.accessioned |
2017-11-10T17:50:55Z |
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dc.date.available |
2017-11-10T17:50:55Z |
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dc.date.issued |
2008 |
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dc.identifier.citation |
Wilkening, M.; Kuhn, A.; Heitjans, P.: Atomic-scale measurement of ultraslow Li motions in glassy LiAlSi2 O6 by two-time L6 i spin-alignment echo NMR correlation spectroscopy. In: Physical Review B - Condensed Matter and Materials Physics 78 (2008), Nr. 5, 54303. DOI: https://doi.org/10.1103/PhysRevB.78.054303 |
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dc.description.abstract |
6Li spin-alignment echo (SAE) nuclear-magnetic-resonance (NMR) spectroscopy is used to monitor single-particle two-time correlation functions in LiAlSi2O6 glass. The method, here applied in the temperature range from 300 to 400 K, is sensitive to ultraslow Li hopping processes with rates (1/τSAE) down to 10 jumps/s. The use of a sample with natural 6Li abundance allowed the measurement of pure NMR spin-alignment echoes which are damped with increasing mixing time exclusively by slow Li jumps, i.e., free of influences arising from, e.g., interfering spin-diffusion effects. The considerably stretched correlation functions reveal the presence of a broad distribution of jump rates. The results are comprehensively compared with those recently obtained from both 7Li SAE and 7Li spin-lattice relaxation NMR as well as from dc conductivity measurements. Interestingly, the activation energy of the latter, which are sensitive to long-range Li transport parameters, is in good agreement with that microscopically probed by 6Li SAE NMR, here. © 2008 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 B 78 (2008), Nr. 5 |
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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. |
|
dc.subject |
Spin-Alignment Echo (SAE) |
eng |
dc.subject |
Nuclear Magnetic Resonance (NMR) |
eng |
dc.subject.ddc |
530 | Physik
|
ger |
dc.title |
Atomic-scale measurement of ultraslow Li motions in glassy LiAlSi2 O6 by two-time L6 i spin-alignment echo NMR correlation spectroscopy |
eng |
dc.type |
Article |
|
dc.type |
Text |
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dc.relation.issn |
10980121 |
|
dc.relation.doi |
https://doi.org/10.1103/PhysRevB.78.054303 |
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dc.bibliographicCitation.issue |
5 |
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dc.bibliographicCitation.volume |
78 |
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dc.bibliographicCitation.firstPage |
54303 |
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dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
|