https://doi.org/10.1007/s100510050107
Form-factor measurements on chromium with high-energy synchrotron radiation
1
Hamburger Synchrotronstrahlungslabor HASYLAB at
Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22603
Hamburg, Germany
2
Institut für Festkörperforschung at
Forschungszentrum Jülich, 52425 Jülich, Germany
3
Institut für Physikalische Chemie, Universität München,
Butenandtstrasse 5-13, 81377 München, Germany
4
Institut
für Kristallographie, Universität Tübingen, Charlottenstrasse
33, 72070 Tübingen, Germany
Received:
17
August
1998
Revised:
10
August
1999
Published online: 15 March 2000
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
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
