Oxide ion transport in (Nd2−xZrx)Zr2O7+δ electrolytes by an interstitial mechanism

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dc.contributor.authorShlyakhtina, AVen_AU
dc.contributor.authorBelov, DAen_AU
dc.contributor.authorKnotko, AVen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorKolbanev, IVen_AU
dc.contributor.authorVorobieva, GAen_AU
dc.contributor.authorKaryagina, OKen_AU
dc.contributor.authorShcherbakova, LGen_AU
dc.date.accessioned2016-10-26T03:13:09Zen_AU
dc.date.available2016-10-26T03:13:09Zen_AU
dc.date.issued2014-08-05en_AU
dc.date.statistics2016-10-26en_AU
dc.description.abstractWe have studied the structure and transport properties of ten (Nd2−xZrx)Zr2O7+x/2 (x = 0–1.27) solid solutions, which lie in the ZrO2–Nd2Zr2O7 isomorphous miscibility range. Major attention has been focused on the pyrochlore-like (Nd2−xZrx)Zr2O7+x/2 solid solutions with x = 0–0.78, which are thought to be potential interstitial oxide ion conductors. The X-ray and neutron diffraction results demonstrate that the (Nd2−xZrx)Zr2O7+x/2 (x = 0–1.27) solid solutions undergo an order–disorder (pyrochlore–defect fluorite) structural phase transition. The (Nd2−xZrx)Zr2O7+x/2 (x = 0.2–0.78) have the bulk conductivity, ∼(1.2–4) × 10–3 S/cm at 750 °C, which is two orders of magnitude higher than that of the ordered pyrochlore Nd2Zr2O7. An attempt has been made to determine the interstitial oxygen content of (Nd2−xZrx)Zr2O7+x/2 (x = 0.2; 0.67) in a reducing atmosphere using thermogravimetry and mass spectrometry. It has been shown that no reduction occurs in the NdZrO system, where neodymium has only one oxidation state, 3+. © 2014, Elsevier B.V.en_AU
dc.identifier.citationShlyakhtina, A. V., Belov, D. A., Knotko, A. V., Avdeev, M., Kolbanev, I. V., Vorobieva, G. A., Karyagina, O. K., & Shcherbakova, L. G. (2014). Oxide ion transport in (Nd2−xZrx)Zr2O7+δ electrolytes by an interstitial mechanism. Journal of Alloys and Compounds, 603, 274-281. doi:10.1016/j.jallcom.2014.03.068en_AU
dc.identifier.govdoc7441en_AU
dc.identifier.issn0925-8388en_AU
dc.identifier.journaltitleJournal of Alloys and Compoundsen_AU
dc.identifier.pagination274-281en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jallcom.2014.03.068en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/7905en_AU
dc.identifier.volume603en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectFuel cellsen_AU
dc.subjectOxidesen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectSolubilityen_AU
dc.subjectFluoriteen_AU
dc.subjectNeodymiumen_AU
dc.titleOxide ion transport in (Nd2−xZrx)Zr2O7+δ electrolytes by an interstitial mechanismen_AU
dc.typeJournal Articleen_AU
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