We measured circular dichroism in resonant x-ray scattering 3dn → 2p53dn+1l → 3s13dn+1 with incidence perpendicular to the magnetization where the absorption dichroism vanishes. The advantages of photon scattering over other techniques make it possible to study a wide range of materials. The Ni L3 dichroism in NiFe2O4 is (28 ± 5)% in agreement with a localized model. In the metal Co the dichroism is reduced to (10.4 ± 1)% (L3) and (6.8 ± 1.5)% (7.5 eV above L3), indicating a large sensitivity to the nature of the valence states despite the fact that this spectroscopy is based on inner shell transitions.

Magnetic Circular Dichroism in Resonant Raman Scattering in the Perpendicular Geometry at the L edge of 3d Transition Metal Systems

BRAICOVICH, LUCIO;GHIRINGHELLI, GIACOMO CLAUDIO;TAGLIAFERRI, ALBERTO;DALLERA, CLAUDIA;
1999

Abstract

We measured circular dichroism in resonant x-ray scattering 3dn → 2p53dn+1l → 3s13dn+1 with incidence perpendicular to the magnetization where the absorption dichroism vanishes. The advantages of photon scattering over other techniques make it possible to study a wide range of materials. The Ni L3 dichroism in NiFe2O4 is (28 ± 5)% in agreement with a localized model. In the metal Co the dichroism is reduced to (10.4 ± 1)% (L3) and (6.8 ± 1.5)% (7.5 eV above L3), indicating a large sensitivity to the nature of the valence states despite the fact that this spectroscopy is based on inner shell transitions.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/690833
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