X-RAY DICHROISM AND SCATTERING STUDIES OF MAGNETIC SYSTEMS

Recent experimental and theoretical work at ESRF, on circular magnetic X-ray dichroism and surface resonant X-ray scattering for the study o f transition metal systems is briefly reviewed. The applicability and accuracy of dichroism sum rules is critically assessed by discussing t he extent to which real systems satisfy the necessary assumptions. Spe cial emphasis is given to results for the L-2,L-3 edges of the 3d ferr omagnetic metals. The recent demonstration of the feasibility and pote ntial of X-ray scattering for the investigation of surface magnetic or der is also discussed.