Show simple item record

Files in this item

Thumbnail

Item metadata

dc.contributor.authorCordrey, Keith J.
dc.contributor.authorStanczyk, Magda
dc.contributor.authorDixon, Charlotte Amy Louise
dc.contributor.authorKnight, Kevin S.
dc.contributor.authorGardner, Jonathan
dc.contributor.authorMorrison, Finlay D.
dc.contributor.authorLightfoot, Philip
dc.date.accessioned2015-06-03T08:40:04Z
dc.date.available2015-06-03T08:40:04Z
dc.date.issued2015-06-21
dc.identifier166942017
dc.identifier89043945-0ccd-4fdf-87c0-55586a0ff413
dc.identifier000355701000016
dc.identifier84930637717
dc.identifier.citationCordrey , K J , Stanczyk , M , Dixon , C A L , Knight , K S , Gardner , J , Morrison , F D & Lightfoot , P 2015 , ' Structural and dielectric studies of the phase behaviour of the topological ferroelectric La 1-x Nd x TaO 4 ' , Dalton Transactions , vol. 44 , no. 23 , pp. 10673-10680 . https://doi.org/10.1039/c4dt03721aen
dc.identifier.issn1477-9226
dc.identifier.otherORCID: /0000-0002-2813-3142/work/48131878
dc.identifier.otherORCID: /0000-0001-7048-3982/work/59464437
dc.identifier.otherORCID: /0000-0002-8862-8315/work/61133154
dc.identifier.urihttps://hdl.handle.net/10023/6732
dc.descriptionWe thank the University of St Andrews and EPSRC (via DTG studentships to CALD and JG) for funding,en
dc.description.abstractThe layered perovskite LaTaO4 has been prepared in its polar orthorhombic polymorphic form at ambient temperature. Although no structural phase transition is observed in the temperature interval 25° C < T < 500 °C, a very large axial thermal contraction effect is seen, which can be ascribed to an anomalous buckling of the perovskite octahedral layer. The non-polar monoclinic polymorph can be stabilised at ambient temperature by Nd-doping. A composition La0.90Nd0.10TaO4 shows a first-order monoclinic-orthorhombic (non-polar to polar) transition in the region 250° C < T < 350 °C. Dielectric responses are observed at both the above structural events but, despite the ‘topological ferroelectric’ nature of orthorhombic LaTaO4, we have not succeeded in obtaining ferroelectric P–E hysteresis behaviour. Structural relationships in the wider family of AnBnX3n+2 layered perovskites are discussed.
dc.format.extent2893081
dc.language.isoeng
dc.relation.ispartofDalton Transactionsen
dc.subjectQD Chemistryen
dc.subjectDASen
dc.subject.lccQDen
dc.titleStructural and dielectric studies of the phase behaviour of the topological ferroelectric La1-xNdxTaO4en
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.identifier.doihttps://doi.org/10.1039/c4dt03721a
dc.description.statusPeer revieweden
dc.identifier.urlhttp://www.rsc.org/suppdata/dt/c4/c4dt03721a/c4dt03721a1.pdfen


This item appears in the following Collection(s)

Show simple item record