The Library
Surface enhancement of oxygen exchange and diffusion in the ionic conductor La2Mo2O9
Tools
Tools
Tools
Liu, J., Chater, R. J., Hagenhoff, B., Morris, R. J. H. (Richard J. H.) and Skinner, S. J.. (2010) Surface enhancement of oxygen exchange and diffusion in the ionic conductor La2Mo2O9. Solid State Ionics, Vol.181 (No..17-18). pp. 812-818. ISSN 0167-2738
![[img]](http://wrap.warwick.ac.uk/style/images/fileicons/application_pdf.png)
|
PDF
WRAP_Morris_8870481-px-190711-surface_enhancement_of_oxygen_exchange_and_diffusion_in_the_ionic_conductor_la2mo2o9.pdf - Accepted Version - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader Download (1144Kb) |
Official URL: http://dx.doi.org/10.1016/j.ssi.2010.04.009
Abstract
Isotopic surface oxygen exchange and its subsequent diffusion have been measured using secondary ion mass spectrometry in the fast ionic conductor La2Mo2O9. A silver coating was applied to the sample surface to enhance the surface exchange process for dry oxygen. Contrary to previous studies performed using a wet atmosphere, no grain boundary diffusion tail was observed under these optimized dry exchange conditions. The activation energy for oxygen diffusion was found to be 0.66(+/- 0.09) eV at high temperature (>570 degrees C), and 1.25(+/- 0.01)eV at low temperature (<570 degrees C). Time-of-Flight secondary ion mass spectrometry was employed to investigate the correlation between the silver coating and the O-18 concentration on the sample surface. A close correlation between the presence of silver and oxygen incorporation on the surface was observed. (C) 2010 Elsevier B.V. All rights reserved.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
| Divisions: | Faculty of Science > Physics |
| Journal or Publication Title: | Solid State Ionics |
| Publisher: | Elsevier Science BV |
| ISSN: | 0167-2738 |
| Date: | 17 June 2010 |
| Volume: | Vol.181 |
| Number: | No..17-18 |
| Number of Pages: | 7 |
| Page Range: | pp. 812-818 |
| Identification Number: | 10.1016/j.ssi.2010.04.009 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Funder: | Lee Family |
| URI: | http://wrap.warwick.ac.uk/id/eprint/5560 |
Data sourced from Thomson Reuters' Web of Knowledge
Actions (login required)
 |
View Item |
