Form-factor measurements on chromium with high-energy synchrotron radiation

  • J. Strempfer
  • Th. Brückel
  • W. Caliebe
  • A. Vernes
  • H. Ebert
  • W. Prandl
  • J.R. Schneider
Article

Abstract:

Results of high-energy magnetic X-ray diffraction on pure antiferromagnetic chromium are presented. The temperature dependence of the propagation vector of the spin-density wave (SDW) and the strain-wave (SW) could be reproduced. The temperature dependence of the magnetic integrated intensity could be measured in the transversally as well as in the longitudinally polarised SDW phase. The magnetic form-factor has been determined in the transversally polarised SDW phase with five magnetic satellites. For the first time a spin-orbit separation has been performed by comparing X-ray to neutron data. The small orbital contribution to the magnetisation density turns out to be negligible, in agreement to our relativistic band-structure calculations. In addition, measurements of strain-wave reflections have been undertaken, and the results complement previous studies.

PACS. 75.25.+z Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.) - 78.70.Ck X-ray scattering 

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Copyright information

© EDP Sciences, Springer-Verlag, Società Italiana di Fisica 2000

Authors and Affiliations

  • J. Strempfer
    • 1
  • Th. Brückel
    • 2
  • W. Caliebe
    • 2
  • A. Vernes
    • 3
  • H. Ebert
    • 3
  • W. Prandl
    • 4
  • J.R. Schneider
    • 1
  1. 1.Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen-Synchrotron DESYHamburgGermany
  2. 2.Institut für Festkörperforschung at Forschungszentrum JülichJülichGermany
  3. 3.Institut für Physikalische ChemieUniversität MünchenMünchenGermany
  4. 4.Institut für KristallographieUniversität TübingenTübingenGermany

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