X-RAY CIRCULAR DICHROIC BRAGG-REFLECTIONS FROM A GDCO AG MULTILAYER/

Bragg peaks are observed in difference resonant specular reflectivity signals from a GdCo/Ag multilayer in a flipping magnetic field for cir cularly polarized X-rays. The element-specific X-ray scattering at the L-3 absorption edge of Gd directly evidences layers of magnetically o rdered Gd ions stacked at a regular spacing of the multilayer 51 Angst rom period. The Bragg peaks show a negative polarity, which is account ed for by the property of the resonant magnetic-charge interference sc attering.