dc.date.accessioned | 2020-06-19T18:35:12Z | |
dc.date.available | 2021-03-30T22:45:42Z | |
dc.date.created | 2019-04-22T17:51:43Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Fjellvåg, 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.uri | http://hdl.handle.net/10852/77075 | |
dc.description.abstract | The 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.language | EN | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.title | Crystal structure of LaSr3Fe3O9 and its phase relation with LaSr3Fe3O10 | |
dc.type | Journal article | |
dc.creator.author | Fjellvåg, Øystein | |
dc.creator.author | Øygarden, Vegar | |
dc.creator.author | Sørby, Magnus Helgerud | |
dc.creator.author | Sjåstad, Anja Olafsen | |
cristin.unitcode | 185,15,17,0 | |
cristin.unitname | Senter for materialvitenskap og nanoteknologi | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 1693316 | |
dc.identifier.bibliographiccitation | info: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.jtitle | Journal of Solid State Chemistry | |
dc.identifier.volume | 275 | |
dc.identifier.startpage | 56 | |
dc.identifier.endpage | 62 | |
dc.identifier.doi | https://doi.org/10.1016/j.jssc.2019.03.050 | |
dc.identifier.urn | URN:NBN:no-80159 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0022-4596 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/77075/1/Fjellvag_O9-submitted-1.pdf | |
dc.type.version | AcceptedVersion | |
dc.relation.project | NFR/221905 | |