High and low-temperature crystal and magnetic structures of epsilon-Fe2O3 and their correlation to its magnetic properties

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dc.creatorGich, M.
dc.creatorFrontera, C.
dc.creatorRoig, A.
dc.creatorTaboada, E.
dc.creatorMolins, E.
dc.creatorRechenberg, H. R.
dc.creatorArdisson, J. D.
dc.creatorMacedo, W. A. A.
dc.creatorRitter, C.
dc.creatorHardy, V.
dc.creatorSort, J.
dc.creatorSkumryev, V.
dc.creatorNogues, J.
dc.date2006-04-28
dc.date.accessioned2026-07-07T07:08:39Z
dc.date.available2026-07-07T07:08:39Z
dc.descriptionThe crystal and magnetic structures of the orthorhombic e-Fe2O3 have been studied by simultaneous Rietveld refinement of X-ray and neutron powder diffraction data in combination with Mossbauer spectroscopy, as well as magnetisation and heat capacity measurements. It has been found that above 150 K the e-Fe2O3 polymorph is a collinear ferrimagnet with the magnetic moments directed along the a axis, while the magnetic ordering below 80 K is characterised by a square-wave incommensurate structure. The transformation between these two states is a second order phase transition and involves subtle structural changes mostly affecting the coordination of the tetrahedral and one of the octahedral Fe sites. The temperature dependence of the e-Fe2O3 magnetic properties is discussed in the light of these results.
dc.description34 pages, 12 figures, submitted to Chemistry of Materials
dc.identifierhttps://arxiv.org/abs/cond-mat/0604677
dc.identifierhttp://arxiv.org/abs/cond-mat/0604677
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/110785
dc.subjectMaterials Science
dc.titleHigh and low-temperature crystal and magnetic structures of epsilon-Fe2O3 and their correlation to its magnetic properties
dc.typetext

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