Effect of short-range magnetic ordering on electron energy-loss spectra in spinels
Publication year
2003Source
Physical Review. B, Condensed Matter and Materials Physics, 68, 22, (2003), pp. 1-5, article 224420ISSN
Publication type
Article / Letter to editor
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Organization
Theory of Condensed Matter
Journal title
Physical Review. B, Condensed Matter and Materials Physics
Volume
vol. 68
Issue
iss. 22
Page start
p. 1
Page end
p. 5
Subject
Theory of Condensed MatterAbstract
The energy-loss near-edge structure (ELNES) at the oxygen K edge in two AB(2)O(4) spinels (A=Mg, B=Al, Cr) is reported. In MgAl2O4 the experimental data are successfully modelled within the local density approximation framework. In the case of MgCr2O4 spin polarization, in the form of antiferromagnetic ordering on the Cr sublattice, 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.
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- Academic publications [245131]
- Electronic publications [132451]
- Faculty of Science [37407]
- Open Access publications [106007]
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