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dc.date.accessioned2020-06-19T18:35:12Z
dc.date.created2019-04-22T17:51:43Z
dc.date.issued2019
dc.identifier.citationFjellvåg, Øystein Øygarden, Vegar Sørby, Magnus Helgerud Sjåstad, Anja Olafsen . Crystal structure of LaSr3Fe3O9 and its phase relation with LaSr3Fe3O10. Journal of Solid State Chemistry. 2019, 275, 56-62
dc.identifier.urihttp://hdl.handle.net/10852/77075
dc.description.abstractThe Ruddlesden-Popper phase LaSr3Fe3O10 and its reduced derivatives with nominal composition LaSr3Fe3O10–x, with 0 < x < 1.21, are described in detail with respect to crystal structure, magnetic order, thermal stability and likely vacancy mechanisms. The crystal structure of the LaSr3Fe3O9 (x = 1) phase is described. The LaSr3Fe3O10-δ phase prevails for x < 0.51, whereas LaSr3Fe3O9±ε prevails for x > 0.85. The phases are separated by a two-phase region 0.51 < x < 0.85. By combined Rietveld refinements of high-resolution powder synchrotron and neutron diffraction, the crystallographic and magnetic structure of LaSr3Fe3O9 is described. LaSr3Fe3O9 takes a layer like RP3 type structure with features of the brownmillerite structure in the triple perovskite type slabs; unit cell dimensions a = 28.7562(13) Å, b = 5.5280(2) Å, c = 5.4583(2) Å, space group Cmcm. LaSr3Fe3O9 is an antiferromagnet with TN > 350 K and with a G-type magnetic structure, magnetic space group PCbcm. Based on unit cell volume considerations, local oxygen vacancy ordering schemes are suggested.
dc.languageEN
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleCrystal structure of LaSr3Fe3O9 and its phase relation with LaSr3Fe3O10
dc.typeJournal article
dc.creator.authorFjellvåg, Øystein
dc.creator.authorØygarden, Vegar
dc.creator.authorSørby, Magnus Helgerud
dc.creator.authorSjåstad, Anja Olafsen
dc.date.embargoenddate2021-03-30
cristin.unitcode185,15,17,0
cristin.unitnameSenter for materialvitenskap og nanoteknologi
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1
dc.identifier.cristin1693316
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Solid State Chemistry&rft.volume=275&rft.spage=56&rft.date=2019
dc.identifier.jtitleJournal of Solid State Chemistry
dc.identifier.volume275
dc.identifier.startpage56
dc.identifier.endpage62
dc.identifier.doihttps://doi.org/10.1016/j.jssc.2019.03.050
dc.identifier.urnURN:NBN:no-80159
dc.type.documentTidsskriftartikkel
dc.type.peerreviewedPeer reviewed
dc.source.issn0022-4596
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/77075/1/Fjellvag_O9-submitted-1.pdf
dc.type.versionAcceptedVersion
dc.relation.projectNFR/221905


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