Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevB.74.174205
DC FieldValue
dc.titleComparative study of ion conducting pathways in borate glasses
dc.contributor.authorHall, A.
dc.contributor.authorAdams, S.
dc.contributor.authorSwenson, J.
dc.date.accessioned2014-06-17T07:57:56Z
dc.date.available2014-06-17T07:57:56Z
dc.date.issued2006
dc.identifier.citationHall, A., Adams, S., Swenson, J. (2006). Comparative study of ion conducting pathways in borate glasses. Physical Review B - Condensed Matter and Materials Physics 74 (17) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.74.174205
dc.identifier.issn10980121
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/64825
dc.description.abstractThe conduction pathways in metal-halide doped silver, lithium, and sodium diborate glasses have been examined by bond valence analysis of reverse Monte Carlo (RMC) produced structural models of the glasses. Although all glass compositions have basically the same short-range structure of the boron-oxygen network, it is evident that the intermediate-range structure is strongly dependent on the type of mobile ion. The topography of the pathways and the coordination of the pathway sites differ distinctly between the three glass systems. The mobile silver ions in the AgI-doped glass tend to be mainly iodine-coordinated and travel in homogeneously distributed pathways located in salt-rich channels of the borate network. In the NaCl-doped glass, there is an inhomogeneous spatial distribution of pathways that reflects the inhomogeneous introduction of salt ions into the glass. However, since the salt clusters are not connected, no long-range conduction pathways are formed without including also oxygen-rich regions. The pathways in the LiCl-doped glass are slightly more evenly distributed compared to the NaCl-doped glass (but not as ordered as in the AgI-doped glass), and the regions of mainly oxygen-coordinated pathway sites are of higher importance for the long-range migration. In order to more accurately investigate how these differences in the intermediate-range order of the glasses affect the ionic conductivity, we have compared the realistic structure models to more or less randomized structures. An important conclusion from this comparison is that we find no evidence that a pronounced intermediate-range order in the atomic structure or in the network of conduction pathways, as in the AgI-doped glass, is beneficial for the dc conductivity. © 2006 The American Physical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1103/PhysRevB.74.174205
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.description.doi10.1103/PhysRevB.74.174205
dc.description.sourcetitlePhysical Review B - Condensed Matter and Materials Physics
dc.description.volume74
dc.description.issue17
dc.description.page-
dc.description.codenPRBMD
dc.identifier.isiut000242409000065
Appears in Collections:Staff Publications

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

SCOPUSTM   
Citations

17
checked on Nov 13, 2019

WEB OF SCIENCETM
Citations

17
checked on Nov 13, 2019

Page view(s)

55
checked on Oct 27, 2019

Google ScholarTM

Check

Altmetric


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