Li Ion diffusion in nanocrystalline and nanoglassy LiAISi2O 6 and LiBO2 - Structure dynamics relations in two glass forming compounds

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dc.identifier.uri http://dx.doi.org/10.15488/2264
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/2290
dc.contributor.author Kuhn, Alexander
dc.contributor.author Tobschall, Esther
dc.contributor.author Heitjans, Paul
dc.date.accessioned 2017-11-10T18:14:25Z
dc.date.available 2017-11-10T18:14:25Z
dc.date.issued 2009
dc.identifier.citation Kuhn, A.; Tobschall, E.; Heitjans, P.: Li Ion diffusion in nanocrystalline and nanoglassy LiAISi2O 6 and LiBO2 - Structure dynamics relations in two glass forming compounds. In: Zeitschrift für Physikalische Chemie 223 (2009), S. 1359-1377. DOI: https://doi.org/10.1524/zpch.2009.6084
dc.description.abstract In the present study the Li diffusivity in nanostructured samples of two glass forming model systems, spodumene (LiAlSi2O6) and lithium metaborate (LiBO2), was examined using 7Li nuclear magnetic resonance (NMR) spin-lattice relaxometry and dc conductivity measurements. The nanostructured samples were prepared by high-energy ball milling of the respective crystalline starting material on the one hand and the corresponding glass on the other hand. The diffusivity of the glass exceeds that of the crystalline sample for both systems. However, when the crystalline samples are mechanically treated by ball milling the diffusivity is enhanced. Nevertheless, the diffusivity of these nanocrystalline samples remains lower than that of the corresponding glass. Surprisingly, when the glassy samples are treated in the same way the diffusivity decreases. After sufficiently long milling times the diffusivity of these nanoglassy samples approaches that of the nanocrystalline samples. This convergence effect seems to be due to structural relaxation processes as is suggested by supplementary infrared spectroscopy and 27Al, 12B magic angle spinning NMR measurements. © by Oldenbourg Wissenschaftsverlag eng
dc.language.iso eng
dc.publisher Berlin : Walter de Gruyter
dc.relation.ispartofseries Zeitschrift für Physikalische Chemie 223 (2009)
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 Ion diffusion eng
dc.subject Lialsi2o6 eng
dc.subject Libo2 eng
dc.subject Nanocrystalline eng
dc.subject Nanoglassy eng
dc.subject.ddc 540 | Chemie ger
dc.subject.ddc 530 | Physik ger
dc.title Li Ion diffusion in nanocrystalline and nanoglassy LiAISi2O 6 and LiBO2 - Structure dynamics relations in two glass forming compounds
dc.type article
dc.type Text
dc.relation.issn 09429352
dc.relation.doi https://doi.org/10.1524/zpch.2009.6084
dc.bibliographicCitation.volume 223
dc.bibliographicCitation.firstPage 1359
dc.bibliographicCitation.lastPage 1377
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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