Designing new n=2 sillen-aurivillius phases by lattice-matched substitutions in the halide and [Bi2O2](2+) layers

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dc.contributor.authorLiu, Sen_AU
dc.contributor.authorBlanchard, PERen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorLing, CDen_AU
dc.date.accessioned2013-10-27T22:23:04Zen_AU
dc.date.available2013-10-27T22:23:04Zen_AU
dc.date.issued2013-09-01en_AU
dc.date.statistics2013-10-28en_AU
dc.description.abstractAbstract A new n=2 Sillen–Aurivillius compound Bi3Sr2Nb2O11Br has been synthesised based on Bi3Pb2Nb2O11Cl by simultaneously replacing Pb2+ with Sr2+ and Cl− with Br−. Rietveld refinements against X-ray and neutron powder diffraction data revealed a significant relative compression in the stacking axis (c-axis) of the new compound. Sr2+ doping reduces the impact of the stereochemically active 6s2 lone pair found on Pb2+ and Bi3+, resulting in a contraction of the c-axis by 1.22% and an expansion of the ab plane by 0.25%. This improves the inter-layer compatibility with the larger halide Br−. Analysis of X-ray absorption near-edge spectroscopy data show that the ferroelectric distortion of the B-site cation is less apparent in Bi3Sr2Nb2O11Br compared to Bi3Pb2Nb2O11Cl, and variable-temperature neutron diffraction data show no evidence for a ferroelectric distortion.© 2013, Elsevier Incen_AU
dc.identifier.citationLiu, S., Blanchard, P. E. R., Avdeev, M., Kennedy, B. J., & Ling, C. D. (2013). Designing new n=2 sillen-aurivillius phases by lattice-matched substitutions in the halide and [Bi2O2](2+) layers. Journal of Solid State Chemistry, 205, 165-170. doi:10.1016/j.jssc.2013.07.004en_AU
dc.identifier.govdoc5050en_AU
dc.identifier.issn0022-4596en_AU
dc.identifier.journaltitleJournal of Solid State Chemistryen_AU
dc.identifier.pagination165-170en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jssc.2013.07.004en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4856en_AU
dc.identifier.volume205en_AU
dc.language.isoenen_AU
dc.publisherAcademic Press Inc Elsevier Scienceen_AU
dc.subjectBromine compoundsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectBismuthen_AU
dc.subjectSpectroscopyen_AU
dc.subjectLeaden_AU
dc.subjectHalidesen_AU
dc.titleDesigning new n=2 sillen-aurivillius phases by lattice-matched substitutions in the halide and [Bi2O2](2+) layersen_AU
dc.typeJournal Articleen_AU
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