Long- and short-range structure studies of KBT-KBZ solid-solutions using synchrotron radiation

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dc.contributor.authorLiu, Sen_AU
dc.contributor.authorBlanchard, PERen_AU
dc.contributor.authorZhang, Zen_AU
dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorLing, CDen_AU
dc.date.accessioned2018-09-17T05:15:25Zen_AU
dc.date.available2018-09-17T05:15:25Zen_AU
dc.date.issued2015-01-14en_AU
dc.date.statistics2018-09-16en_AU
dc.description.abstractThe relaxor ferroelectric K0.5Bi0.5TiO3 has been synthesised in a solid-solution series with K0.5Bi0.5ZrO3, as K0.5Bi0.5Ti1−xZrxO3. High-resolution synchrotron X-ray powder diffraction and X-ray absorption near edge structure spectroscopy were used to characterise the long-range average and local structural behaviour. Rietveld refinements against diffraction data show that a pseudocubic tetragonal region exists across the whole solid-solution series, with truly cubic symmetry only observed at x = 1 (pure KBZ). Variable-temperature diffraction data for x = 0 (pure KBT) showed a broad ferroelectric transition from tetragonal to cubic symmetry at approximately 683 K with a coexistence of both phases close to that temperature, accompanied by a marked volume contraction. Ti K-edge data showed that Zr doping has a minimal effect on Ti off-centering, and revealed no evidence for local clustering. Metal L-edges showed that Ti4+ cations remain off-centered with increasing Zr content, while Zr4+ cations approach a higher-symmetry coordination environment, most likely due to the increased size of the Zr atoms. Although there is a minimal effect on actual Ti-offsets, an effective dilution of these environments by Zr doping leads to a reduction in polar domains and a diminished ferroelectric response. © 2015 Royal Society of Chemistryen_AU
dc.identifier.citationLiu, S., Blanchard, P. E., Zhang, Z., Kennedy, B. J., & Ling, C. D. (2015). Long-and short-range structure studies of KBT-KBZ solid-solutions using synchrotron radiation. Dalton Transactions, 44(23), 10681-10688. doi:10.1039/C4DT03866Een_AU
dc.identifier.govdoc9078en_AU
dc.identifier.issn1477-9234en_AU
dc.identifier.issue23en_AU
dc.identifier.journaltitleDalton Transactionsen_AU
dc.identifier.pagination10681-10688en_AU
dc.identifier.urihttps://doi.org/10.1039/C4DT03866Een_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9008en_AU
dc.identifier.volume44en_AU
dc.language.isoenen_AU
dc.publisherRoyal Society of Chemistryen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectOrder-disorder transformationsen_AU
dc.subjectCrystal-phase transformationsen_AU
dc.subjectPowdersen_AU
dc.subjectFerrimagnetic materialsen_AU
dc.subjectAbsorptionen_AU
dc.subjectPerovskitesen_AU
dc.subjectADPen_AU
dc.titleLong- and short-range structure studies of KBT-KBZ solid-solutions using synchrotron radiationen_AU
dc.typeJournal Articleen_AU
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