Geometric and magnetic properties of Co/Pd system
S.-J. Oh, Wookje Kim, Wondong Kim, B.-H. Choi, Jae-Young Kim, Hoon, Koh, H.-J. Kim (1) J.-H. Park (2) ((1) Department of physics, Seoul National, University (2) National Synchrotron Light Source, Brookhaven National, Laboratory)
TL;DR
This study investigates the geometric and magnetic characteristics of Co films on Pd(111), revealing how interface roughness and Pd capping influence magnetic anisotropy through hybridization effects.
Contribution
It provides new insights into how interface roughness and Pd capping modify magnetic properties of Co films via hybridization effects.
Findings
Rough interfaces enhance perpendicular remanent magnetization.
Pd capping layer increases Co orbital moment.
Co films grow incoherently with fcc island structure on Pd(111).
Abstract
We measured geometric and magnetic properties of Co films on the Pd(111) surface by x-ray photoelectron diffraction (XPD), x-ray magnetic circular dichroism (MCD) at the Co L_{2,3} edge, and the surface magneto-optical Kerr effect (SMOKE) measurements. Co thin films are found to grow incoherently with fcc island structure on the smooth Pd(111) substrate. Comparison of MCD and SMOKE measurements of Co thin films grown on rough and smooth Pd(111) surfaces suggests that perpendicular remanent magnetization and Co orbital moment are enhanced by the rough interface. Pd capping layer also induces perpendicular orbital moment enhancement. These observations indicate the influence of hybridization between Co 3d and Pd 4d at the interface on the magnetic anisotropy.
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Taxonomy
TopicsMagnetic properties of thin films · Magnetic Properties of Alloys · Metallurgical and Alloy Processes