Geometric and magnetic properties of Co/Pd system

We measured geometric and magnetic properties of Co ®lms on the Pd(1 1 1) surface by X-ray photoelectron diffraction (XPD), X-ray magnetic circular dichroism (MCD) at the Co L2,3 edge, and the surface magneto-optical Kerr effect (SMOKE) measurements. Co thin ®lms are found to grow incoherently with fcc island structure on the smooth Pd(1 1 1) substrate. Comparison of MCD and SMOKE measurements of Co thin ®lms grown on rough and smooth Pd(1 1 1) surfaces suggests that perpendicular remnant magnetization and Co orbital moment are enhanced by the rough interface. Pd capping layer also induces perpendicular orbital moment enhancement. These observations indicate the in¯uence of hybridization between Co 3d and Pd 4d at the interface on the magnetic anisotropy. # 2001 Elsevier Science B.V. All rights reserved