Magnetic phases and structural properties in Co/Ru superlattices

X-ray diffraction, ferromagnetic resonance (FMR) and x-ray magnetic circular dichroism (XMCD) are used for studying Co/Ru superlattices grown by magnetron sputtering. The XMCD measurements have provided Co spin magnetic moments lower than the bulk Co value, which has confirmed the presence of a Co magnetic region with a lower local effective magnetization attributed to the Co/Ru interfaces.