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Search: WFRF:(Plogmann S.)

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  • Magnuson, Martin, 1965-, et al. (author)
  • Magnetic circular dichroism in X-ray fluorescence of Heuseler alloys at threshold excitation
  • 2001
  • In: Solid State Communications. - 0038-1098 .- 1879-2766. ; 117:2, s. 79-82
  • Journal article (peer-reviewed)abstract
    • The results of fluorescence measurements of magnetic circular dichroism (MCD) in Mn L2,3 X-ray emission and absorption for Heusler alloys NiMnSb and Co2MnSb are presented. Very intense resonance Mn L3 emission is found at the Mn 2p3/2 threshold and attributed to a peculiarity of the threshold excitation in materials with a half-metallic character of the electronic structure. The excitation energy dependence of Mn L2,3 X-ray emission spectra (XES) was measured at beamline ID12B at the European Synchrotron Radiation Facility (ESRF, Grenoble) using 83% circularly polarized X-rays. A very large MCD effect found in XES is attributed to strong exchange splitting of spin-up and spin-down Mn 3d states. The anomalously high ratio of L2 emission intensity to L3 emission intensity is found.
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