Please use this identifier to cite or link to this item: https://doi.org/10.1021/cm800466y
DC FieldValue
dc.titleCharge transport by polyatomic anion diffusion in Sc2(WO 4)3
dc.contributor.authorZhou, Y.
dc.contributor.authorAdams, S.
dc.contributor.authorRao, R.P.
dc.contributor.authorEdwards, D.D.
dc.contributor.authorNeiman, A.
dc.contributor.authorPestereva, N.
dc.date.accessioned2014-10-07T09:48:02Z
dc.date.available2014-10-07T09:48:02Z
dc.date.issued2008-10-28
dc.identifier.citationZhou, Y., Adams, S., Rao, R.P., Edwards, D.D., Neiman, A., Pestereva, N. (2008-10-28). Charge transport by polyatomic anion diffusion in Sc2(WO 4)3. Chemistry of Materials 20 (20) : 6335-6345. ScholarBank@NUS Repository. https://doi.org/10.1021/cm800466y
dc.identifier.issn08974756
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/86211
dc.description.abstractDiscussions about the nature of the charge carriers in the scandium tungstate and other isostructural tungstates and molybdates have persisted in the literature since a variety of experimental indications pointed toward trivalent cations as the mobile species. Here variations of the structure over a wide temperature range are analyzed by XRD and computational methods, demonstrating that the negative thermal expansion persists throughout the range of 11-1300 K. Over a limited temperature range (4)3. A bond valence analysis depicts possible diffusion pathways for WC4 2-, although there is no indication of a pathway for Sc3+. The hopping mechanism of tungstate ions from one equilibrium site to another one follows the instantaneous diffusion pathways. A long-range transport still requires the rare formation of WO4 2- Frenkel defects limiting the accuracy of the simulated absolute conductivity. Both MD simulations and bond valence analysis suggest WO4 2- be the mobile species, which follow the interstitialcy diffusion mechanism. Our 3-section Tubandt-type experiments qualitatively show that the transfer of W occurs in the form of a negatively charged complex. This should be the first example of polyatomic diffusion species and opens a new field in the search for new ionic conductors. © 2008 American Chemical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/cm800466y
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.description.doi10.1021/cm800466y
dc.description.sourcetitleChemistry of Materials
dc.description.volume20
dc.description.issue20
dc.description.page6335-6345
dc.description.codenCMATE
dc.identifier.isiut000260254400013
Appears in Collections:Staff Publications

Show simple item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

47
checked on May 16, 2022

WEB OF SCIENCETM
Citations

46
checked on May 16, 2022

Page view(s)

178
checked on May 12, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.