dc.contributor.author | Fjellvåg, Øystein | |
dc.contributor.author | Øygarden, Vegar | |
dc.contributor.author | Sørby, Magnus Helgerud | |
dc.contributor.author | Sjåstad, Anja Olafsen | |
dc.date.accessioned | 2020-02-17T14:11:34Z | |
dc.date.available | 2020-02-17T14:11:34Z | |
dc.date.created | 2019-04-22T17:51:43Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Journal of Solid State Chemistry. 2019, 275 56-62. | en_US |
dc.identifier.issn | 0022-4596 | |
dc.identifier.uri | https://hdl.handle.net/11250/2642053 | |
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. | en_US |
dc.language.iso | eng | en_US |
dc.title | Crystal structure of LaSr3Fe3O9 and its phase relation with LaSr3Fe3O10 | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.rights.holder | ©2019 Elsevier Inc. All rights reserved. | en_US |
dc.source.pagenumber | 56-62 | en_US |
dc.source.volume | 275 | en_US |
dc.source.journal | Journal of Solid State Chemistry | en_US |
dc.identifier.doi | 10.1016/j.jssc.2019.03.050 | |
dc.identifier.cristin | 1693316 | |
dc.relation.project | Norges forskningsråd: 221905 | en_US |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |