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Superexchange-mediated negative thermal expansion in Nd-doped BiFeO3

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dc.contributor.authorKavanagh, Christopher Matthew
dc.contributor.authorLightfoot, Philip
dc.contributor.authorMorrison, Finlay D.
dc.date.accessioned2018-12-14T00:36:04Z
dc.date.available2018-12-14T00:36:04Z
dc.date.issued2018-04-07
dc.identifier251814300
dc.identifier835a5430-cc9b-486e-bafe-515cfbb4a8bc
dc.identifier85044716413
dc.identifier000431290600013
dc.identifier.citationKavanagh , C M , Lightfoot , P & Morrison , F D 2018 , ' Superexchange-mediated negative thermal expansion in Nd-doped BiFeO 3 ' , Journal of Materials Chemistry C , vol. 6 , no. 13 , pp. 3260-3270 . https://doi.org/10.1039/C7TC05175Aen
dc.identifier.issn2050-7526
dc.identifier.otherORCID: /0000-0002-2813-3142/work/48131892
dc.identifier.otherORCID: /0000-0001-7048-3982/work/59464415
dc.identifier.urihttps://hdl.handle.net/10023/16684
dc.descriptionWe thank the Science and Technology Facilities Council for access to the ISIS neutron facility (RB1210111). CMK would like to thank the EPSRC for provision of a studentship via the doctoral training grant (EP/K503162/1).en
dc.description.abstractA detailed powder neutron diffraction study of Bi0.7Nd0.3FeO3 shows it is a Gz-type antiferromagnet adopting the space group Pn′ma ́. Detailed structural analysis using both Rietveld and symmetry mode analysis indicates that competition between geometric effects and magnetic superexchange results in unusual evolution of octahedral tilting and structural distortion on cooling. These changes are manifested in both the electrical response, which displays relaxer-type behaviour, and also in a region of negative thermal expansion below 200 K.
dc.format.extent4172555
dc.language.isoeng
dc.relation.ispartofJournal of Materials Chemistry Cen
dc.subjectQD Chemistryen
dc.subjectDASen
dc.subjectBDCen
dc.subject.lccQDen
dc.titleSuperexchange-mediated negative thermal expansion in Nd-doped BiFeO3en
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.identifier.doi10.1039/C7TC05175A
dc.description.statusPeer revieweden
dc.date.embargoedUntil2018-12-14


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