On the effect of short-range magnetic ordering on electron energy-loss spectra in spinels
McComb, D. W. · Craven, A. J. · Chioncel, L. · Lichtenstein, A. I. · Docherty, F. T.
Original · EN
The energy-loss near-edge structure (ELNES) at the oxygen K edge in two AB₂O₄ spinels (A=Mg, B=Al,Cr) is reported. In MgAl₂O₄ the experimental data is successfully modelled within the LDA framework. In the case of MgCr₂O₄ 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 Tₙ. 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.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.