Epitaxial cobalt films on CaF2(110) buffer layers on Si(001) were grown by molecular beam epitaxy. It is found that Co grows in a face-centered cubic lattice forming nanodimensional islands. The islands tend to align along the parallel grooves which characterize the self-patterned CaF2(110) surface grown on Si(001). Photoemission was used to probe the uniformity of the film and the occurrence of chemical reactions with the substrate. X-ray magnetic circular dichroism at the Co L2,3 edges was used to access the magnetic properties of the films. The thick Co film presents an in-plane easy magnetization axis along the directions of the grooves of the CaF2(110) surface.
Cobalt on calcium fluoride: Initial stages of growth and magnetic properties
Luca Pasquali;Stefano Nannarone;Nicola Mahne;Maddalena Pedio;Angelo Giglia;Francesco Borgatti;
2006
Abstract
Epitaxial cobalt films on CaF2(110) buffer layers on Si(001) were grown by molecular beam epitaxy. It is found that Co grows in a face-centered cubic lattice forming nanodimensional islands. The islands tend to align along the parallel grooves which characterize the self-patterned CaF2(110) surface grown on Si(001). Photoemission was used to probe the uniformity of the film and the occurrence of chemical reactions with the substrate. X-ray magnetic circular dichroism at the Co L2,3 edges was used to access the magnetic properties of the films. The thick Co film presents an in-plane easy magnetization axis along the directions of the grooves of the CaF2(110) surface.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
