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dc.contributor.authorDixon, Charlotte A. L.
dc.contributor.authorMcNulty, Jason A.
dc.contributor.authorKnight, Kevin S.
dc.contributor.authorGibbs, Alexandra S.
dc.contributor.authorLightfoot, Philip
dc.date.accessioned2017-06-05T13:30:13Z
dc.date.available2017-06-05T13:30:13Z
dc.date.issued2017-05-13
dc.identifier249965200
dc.identifier9b72a380-30cd-4f17-bb47-c9968fbe8eeb
dc.identifier85019563657
dc.identifier000402965400017
dc.identifier.citationDixon , C A L , McNulty , J A , Knight , K S , Gibbs , A S & Lightfoot , P 2017 , ' Phase transition behavior of the layered perovskite CsBi 0.6 La 0.4 Nb 2 O 7 : a hybrid improper ferroelectric ' , Crystals , vol. 7 , no. 5 , 135 . https://doi.org/10.3390/cryst7050135en
dc.identifier.issn2073-4352
dc.identifier.otherORCID: /0000-0001-7048-3982/work/59464457
dc.identifier.urihttps://hdl.handle.net/10023/10906
dc.descriptionWe thank EPSRC for a PhD studentship to CALD (EP/P505097/1).en
dc.description.abstractThe phase behavior of the layered perovskite CsBi0.6La0.4Nb2O7, of the Dion-Jacobson family, has been studied by high-resolution powder neutron diffraction between temperatures 25 < T < 850 °C. At ambient temperature this material adopts the polar space group P21am; this represents an example of hybrid improper ferroelectricity caused by the interaction of two distinct octahedral tilt modes. Within the limits of our data resolution the thermal evolution of the crystal structure is consistent with a first-order transition between 725 and 750 °C, with both tilt modes vanishing simultaneously, leading to the aristotype space group P4/mmm. This apparent ‘avalanche transition’ behavior resembles that seen in the related Aurivillius phase SrBi2Nb2O9.
dc.format.extent11
dc.format.extent2128453
dc.format.extent193389
dc.language.isoeng
dc.relation.ispartofCrystalsen
dc.subjectPolar crystalen
dc.subjectLayered perovskiteen
dc.subjectHybrid improper ferroelectricen
dc.subjectPhase transitionen
dc.subjectQD Chemistryen
dc.subjectDASen
dc.subject.lccQDen
dc.titlePhase transition behavior of the layered perovskite CsBi0.6La0.4Nb2O7 : a hybrid improper ferroelectricen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.identifier.doihttps://doi.org/10.3390/cryst7050135
dc.description.statusPeer revieweden


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