Source:http://linkedlifedata.com/resource/pubmed/id/18352735
Switch to
| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
9
|
| pubmed:dateCreated |
2008-3-20
|
| pubmed:abstractText |
From 59Co and 23Na NMR, we demonstrate the impact of the Na+ vacancy ordering on the cobalt electronic states in Na0.75CoO2: at long time scales, there is neither a disproportionation into 75% Co3+ and 25% Co4+ states, nor a mixed-valence metal with a uniform Co3.25+ state. Instead, the system adopts an intermediate configuration in which 30% of the lattice sites form an ordered pattern of localized Co3+ states. Above 180 K, an anomalous mobility of specific Na+ sites is found to coexist with this electronic texture, suggesting that the formation of the latter may contribute to stabilizing the Na+ ordering. Control of the ion doping in these materials thus appears to be crucial for fine-tuning of their thermoelectric properties.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
|
| pubmed:month |
Mar
|
| pubmed:issn |
0031-9007
|
| pubmed:author |
pubmed-author:BalakrishnanGG,
pubmed-author:BerthierCC,
pubmed-author:DICKE RER,
pubmed-author:Horvati?MM,
pubmed-author:JulienM-HMH,
pubmed-author:LeenM MMM,
pubmed-author:LejayPP,
pubmed-author:LinC TCT,
pubmed-author:MayaffreHH,
pubmed-author:SimonetVV,
pubmed-author:WooldridgeJJ,
pubmed-author:de VaulxCC
|
| pubmed:issnType |
Print
|
| pubmed:day |
7
|
| pubmed:volume |
100
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
096405
|
| pubmed:year |
2008
|
| pubmed:articleTitle |
Electronic texture of the thermoelectric oxide Na0.75CoO2.
|
| pubmed:affiliation |
Laboratoire de Spectrométrie Physique, UMR5588 CNRS, 38402 Saint Martin d'Hères, France. Marc-Henri.Julien@ujf-grenoble.fr
|
| pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|