Microstructural and magnetic properties of epitaxial Co/Cu(111) multilayers

A series of epitaxial Co/Cu(111) superlattices has been grown on Al2O3 (112 0) substrates with a Nb(110) buffer layer by molecular-beam epitaxy. By app lying profile analysis technique it was possible to determine: (1) the crys tallite size, (2) the microstrains for Co and Cu of the multilayers and (3) the percentage of the hexagonal and face centred cubic structures in the C o layers. Ferromagnetic resonance (FMR) measurements at x-band frequencies are used to study in-plane magnetic properties of the investigated superlat tices. A good relationship between the microstructural and the in-plane mag netic properties were obtained.