Peroxide defect formation in zirconate perovskites

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dc.contributor.authorMiddleburgh, SCen_AU
dc.contributor.authorKaratchevtseva, Ien_AU
dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorBurr, PAen_AU
dc.contributor.authorZhang, ZMen_AU
dc.contributor.authorReynolds, EMen_AU
dc.contributor.authorGrimes, RWen_AU
dc.contributor.authorLumpkin, GRen_AU
dc.date.accessioned2016-10-05T23:54:45Zen_AU
dc.date.available2016-10-05T23:54:45Zen_AU
dc.date.issued2014en_AU
dc.date.statistics2016-10-06en_AU
dc.description.abstractAtomic scale modelling suggests that excess oxygen can be accommodated in the group II perovskite zirconates by the formation of peroxide ion defects. This is unprecedented given the lack of charge compensating defects required for standard excess oxygen accommodation. The solution energy of O2 was predicted to be close to zero for BaZrO3, accommodating the peroxide ion defect more easily than in SrZrO3 or CaZrO3. This was experimentally examined by exposing SrZrO3 and BaZrO3 to hydrogen peroxide solution and then carrying out Raman spectroscopy measurements to look for a peak indicative of peroxide ions. A peak was observed at ∼1000 cm−1 in both compositions, suggesting the theoretically predicted peroxide ion is present. © 2014, The Royal Society of Chemistry.en_AU
dc.identifier.citationMiddleburgh, S. C., Karatchevtseva, I., Kennedy, B. J., Burr, P. A., Zhang, Z., Reynolds, E., Grimes, R. W., & Lumpkin, G. R. (2014). Peroxide defect formation in zirconate perovskites. Journal of Materials Chemistry A: materials for energy and sustainability, 2(38), 15883-15888. doi:10.1039/c4ta02558jen_AU
dc.identifier.govdoc7223en_AU
dc.identifier.issn2050-7496en_AU
dc.identifier.issue38en_AU
dc.identifier.journaltitleJournal of Materials Chemistry A: materials for energy and sustainabilityen_AU
dc.identifier.pagination15883-15888en_AU
dc.identifier.urihttp://dx.doi.org/10.1039/c4ta02558jen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/7641en_AU
dc.identifier.volume2en_AU
dc.language.isoenen_AU
dc.publisherRoyal Society of Chemistryen_AU
dc.subjectAtomsen_AU
dc.subjectZirconatesen_AU
dc.subjectPerovskiteen_AU
dc.subjectMolecular ionsen_AU
dc.subjectPeroxidesen_AU
dc.subjectIonsen_AU
dc.titlePeroxide defect formation in zirconate perovskitesen_AU
dc.typeJournal Articleen_AU
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