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http://hdl.handle.net/10261/114303
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dc.contributor.author | Gurusinghe, N.N.M. | - |
dc.contributor.author | de la Figuera, Juan | - |
dc.contributor.author | Marco, J.F. | - |
dc.contributor.author | Thomas, M.F. | - |
dc.contributor.author | Berry, F.J. | - |
dc.contributor.author | Greaves, C. | - |
dc.date.accessioned | 2015-04-27T16:38:29Z | - |
dc.date.available | 2015-04-27T16:38:29Z | - |
dc.date.issued | 2013 | - |
dc.identifier | doi: 10.1016/j.materresbull.2013.05.058 | - |
dc.identifier | issn: 0025-5408 | - |
dc.identifier.citation | Materials Research Bulletin 48: 3537- 3544 (2013) | - |
dc.identifier.uri | http://hdl.handle.net/10261/114303 | - |
dc.description.abstract | A series of n = 2 Ruddlesden-Popper phases A2B2O 7 of composition Ln2Sr(Ba)Fe2O7 (Ln = La, Nd, Eu) have been prepared. La2SrFe2O7 and La2BaFe2O7 crystallise in the tetragonal space group I4/mmm. The structures of Eu2SrFe2O 7 and Nd2SrFe2O7 are best described in space group P42/mnm. Substitution on the A site with smaller lanthanide- and larger alkaline metal- ions leads to enhanced cationic order in these phases and reflects increasing differences in cationic radii. All the compounds are antiferromagnetically ordered between 298 and 2 K. In La 2SrFe2O7 the magnetic moment lies along [1 1 0] at all temperatures between 298 and 2 K whereas in La2BaFe 2O7 the magnetic moment at 298 K lies along the crystallographic x-axis but redirects from the [1 0 0] to the [1 1 0] direction between 210 and 190 K and is retained in this direction until 2 K. In Nd 2SrFe2O7 the magnetic moment at 298 K lies along [1 1 0] but rotates from [1 1 0] to [0 0 1] between 17 and 9 K. A series of 57Fe Mössbauer spectra recorded from La2SrFe 2O7 between 290 and 600 K indicate a magnetic ordering temperature of TN ≥ 535 K. © 2013 Elsevier Ltd. All rights reserved. | - |
dc.publisher | Pergamon Press | - |
dc.rights | closedAccess | - |
dc.title | Synthesis and characterisation of the n = 2 Ruddlesden-Popper phases Ln2Sr(Ba)Fe2O7 (Ln = La, Nd, Eu) | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1016/j.materresbull.2013.05.058 | - |
dc.date.updated | 2015-04-27T16:38:30Z | - |
dc.description.version | Peer Reviewed | - |
dc.language.rfc3066 | eng | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.fulltext | No Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | none | - |
item.openairetype | artículo | - |
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accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
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