Magnetic Circular Dichroism at High Magnetic Field and Low Temperature

The asymmetric wiggler inserted since the end of 1990 on the Super-ACO storage ring in Orsay, has been built to produce high rate and high flux of circularly polarized soft X-rays in the 400-2000 eV range. This insertion device is particularly well suited to measure X-ray absorption spectra correspo...

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Veröffentlicht in:Jpn. J. Appl. Phys. (Japan) 1992-08, Vol.32, p.295-298
Hauptverfasser: Sainctavit, P H, Lefebvre, D, Arrio, M-A, Verdaguer, M, Cartier dit Moulin, C H, Kappler, J-P, Schille, J-P H, Krill, G, Brouder, C H
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Sprache:eng
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Zusammenfassung:The asymmetric wiggler inserted since the end of 1990 on the Super-ACO storage ring in Orsay, has been built to produce high rate and high flux of circularly polarized soft X-rays in the 400-2000 eV range. This insertion device is particularly well suited to measure X-ray absorption spectra corresponding to dipole transitions towards electronic orbitals which are directly responsible for the magnetism (3d states of first row transition metals, 4f states of rare-earth). Reported are the first magnetic circular X-ray dichroism spectra (of nickel and holmium) obtained with this insertion device. They exemplify the wide prospects of this experimental setup.
ISSN:0021-4922