On the effect of short-range magnetic ordering on electron energy-loss spectra in spinels

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dc.creatorMcComb, D. W.
dc.creatorCraven, A. J.
dc.creatorChioncel, L.
dc.creatorLichtenstein, A. I.
dc.creatorDocherty, F. T.
dc.date2004-01-14
dc.date.accessioned2026-07-07T02:55:53Z
dc.date.available2026-07-07T02:55:53Z
dc.descriptionThe energy-loss near-edge structure (ELNES) at the oxygen $K$ edge in two $AB_2O_4$ spinels (A=Mg, B=Al,Cr) is reported. In $MgAl_2O_4$ the experimental data is successfully modelled within the LDA framework. In the case of $MgCr_2O_4$ spin-polarisation, in the form of antiferromagnetic ordering on the Cr sub-lattice, must be included despite the fact that the measurements were performed at approximately 30 times above $T_N$. A model in which dynamic short-range antiferromagnetic ordering is present at room temperature is proposed to explain the results of the experiments and calculations.
dc.description10 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0401235
dc.identifierhttp://arxiv.org/abs/cond-mat/0401235
dc.identifierPhys. Rev. B 68, 224420 (2003) (5 pages)
dc.identifierdoi:10.1103/PhysRevB.68.224420
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/23109
dc.subjectMaterials Science
dc.titleOn the effect of short-range magnetic ordering on electron energy-loss spectra in spinels
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