Control of magnetic anisotropy of Co/Pt multilayers by inserting interlayers into Pt layers

摘要

The effects of the insertion of Pd thin layers into Pt interlayers in Co/Pt multi layers were investigated to clarify the origin of perpendicular magnetic anisotropy energy into the multilayers. The perpendicular magnetic anisotropy decreased with increase of Pd interlayer thickness. The atom species which face to Co layers caused different mechanism of perpendicular magnetic anisotropy. The volume magnetic anisotropy effect and surface magnetic anisotropy effect were dominant for the Co/Pt and Co/Pd multilayers, respectively, by evaluating the magnetic anisotropy as functions of Co-layer thickness and the Pd insertion layer thickness.