dc.identifier.uri |
http://dx.doi.org/10.15488/2230 |
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dc.identifier.uri |
http://www.repo.uni-hannover.de/handle/123456789/2256 |
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dc.contributor.author |
Indris, Sylvio
|
|
dc.contributor.author |
Heitjans, Paul
|
|
dc.contributor.author |
Roman, H. Eduardo
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dc.contributor.author |
Bunde, Armin
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dc.date.accessioned |
2017-11-10T17:19:18Z |
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dc.date.available |
2017-11-10T17:19:18Z |
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dc.date.issued |
2000 |
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dc.identifier.citation |
Indris, S.; Heitjans, P.; Eduarde Roman, H.; Bunde, A.: Nanocrystalline versus microcrystalline Lo2O:B2O 3 composites: Anomalous ionic conductivities and percolation theory. In: Physical Review Letters 84 (2000), Nr. 13, 2889. DOI: https://doi.org/10.1103/PhysRevLett.84.2889 |
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dc.description.abstract |
We study ionic transport in nano- and microcrystalline (1−x)Li2O:xB2O3 composites using standard impedance spectroscopy. In the nanocrystalline samples (average grain size of about 20 nm), the ionic conductivity σdc increases with increasing content x of B2O3 up to a maximum at x≈0.5. Above x≈0.92, σdc vanishes. By contrast, in the microcrystalline samples (grain size about 10μm), σdc decreases monotonically with x and vanishes above x≈0.55. We can explain this strikingly different behavior by a percolation model that assumes an enhanced conductivity at the interfaces between insulating and conducting phases in both materials and explicitly takes into account the different grain sizes. © 2000 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 84 (2000), Nr. 13 |
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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 |
Conducting phases |
eng |
dc.subject |
Ion conductivities |
eng |
dc.subject |
Microcrystallines |
eng |
dc.subject |
Percolation theory |
eng |
dc.subject |
Boron compounds |
eng |
dc.subject |
Differential thermal analysis |
eng |
dc.subject |
Electric conductivity |
eng |
dc.subject |
Grain boundaries |
eng |
dc.subject |
Grain size and shape |
eng |
dc.subject |
Ion implantation |
eng |
dc.subject |
Nanostructured materials |
eng |
dc.subject |
Percolation (solid state) |
eng |
dc.subject |
Spectroscopic analysis |
eng |
dc.subject |
X ray diffraction analysis |
eng |
dc.subject |
Lithium compounds |
eng |
dc.subject.ddc |
530 | Physik
|
ger |
dc.title |
Nanocrystalline versus microcrystalline Lo2O:B2O 3 composites: Anomalous ionic conductivities and percolation theory |
|
dc.type |
Article |
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dc.type |
Text |
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dc.relation.issn |
00319007 |
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dc.relation.doi |
https://doi.org/10.1103/PhysRevLett.84.2889 |
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dc.bibliographicCitation.issue |
13 |
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dc.bibliographicCitation.volume |
84 |
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dc.bibliographicCitation.firstPage |
2889 |
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dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
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