Direct observation of charge order and an orbital glass state in multiferroic LuFe2O4

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dc.contributor.authorMulders, AMen_AU
dc.contributor.authorLawrence, SMen_AU
dc.contributor.authorStaub, Uen_AU
dc.contributor.authorGarcía-Fernández, Men_AU
dc.contributor.authorScagnoli, Ven_AU
dc.contributor.authorMazzoli, Cen_AU
dc.contributor.authorPomjakushina, Een_AU
dc.contributor.authorConder, Ken_AU
dc.contributor.authorWang, YDen_AU
dc.date.accessioned2009-09-28T02:12:43Zen_AU
dc.date.accessioned2010-04-30T05:05:40Zen_AU
dc.date.available2009-09-28T02:12:43Zen_AU
dc.date.available2010-04-30T05:05:40Zen_AU
dc.date.issued2009-08-14en_AU
dc.date.statistics2009-08-14en_AU
dc.description.abstractGeometrical frustration of the Fe ions in LuFe2O4 leads to intricate charge and magnetic order and a strong magnetoelectric coupling. Using resonant x-ray diffraction at the Fe K edge, the anomalous scattering factors of both Fe sites are deduced from the (h/3 k/3 l/2) reflections. The chemical shift between the two types of Fe ions equals 4.0(1) eV corresponding to full charge separation into Fe2+ and Fe3+. The polarization and azimuthal angle dependence of the superlattice reflections demonstrate the absence of differences in anisotropic scattering revealing random orientations of the Fe2+ orbitals characteristic of an orbital glass state. © 2009, American Physical Societyen_AU
dc.identifier.citationMulders, A. M., Lawrence, S. M., Staub, U., García-Fernández, M., Scagnoli, V., Mazzoli, C., Pomjakushina, E., Conder, K., & Wang, W. D. (2009). Direct observation of charge order and an orbital glass state in multiferroic LuFe2O4. Physical Review Letters, 103(7), 4. doi:10.1103/PhysRevLett.103.077602en_AU
dc.identifier.govdoc1366en_AU
dc.identifier.issn0031-9007en_AU
dc.identifier.issue7en_AU
dc.identifier.journaltitlePhysical Review Lettersen_AU
dc.identifier.pagination4en_AU
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevLett.103.077602en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1831en_AU
dc.identifier.volume103en_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Societyen_AU
dc.subjectFerroelectric materialsen_AU
dc.subjectIronen_AU
dc.subjectLutetiumen_AU
dc.subjectSpin glass stateen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectScatteringen_AU
dc.titleDirect observation of charge order and an orbital glass state in multiferroic LuFe2O4en_AU
dc.typeJournal Articleen_AU
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