Title :
Shifted magnetization curves in ultrathin Co films on stepped Cu(100)
Author :
Rettori, A. ; Trallori, L. ; Pini, M.G. ; Stamm, C. ; Wursch, Ch. ; Egger, S. ; Pescia, D.
Author_Institution :
Dipt. di Fisica, Firenze Univ., Italy
fDate :
7/1/1998 12:00:00 AM
Abstract :
Ultrathin ferromagnetic films of Co, grown on a stepped Cu(100) substrate, exhibit shifted magnetization curves. We calculate the shift field of a film consisting of N planes. Our model includes a four-fold bulk anisotropy k4, a uniaxial anisotropy ku and a magnetic field applied perpendicularly to the easy magnetization axis. Even if ku is limited to the outermost plane, a finite shift field hs exists, which, for ku≪k4, is proportional to ku/N. This result explains some experimental data
Keywords :
cobalt; copper; ferromagnetic materials; magnetic thin films; magnetisation; perpendicular magnetic anisotropy; Co; Cu; easy magnetization axis; ferromagnetic films; four-fold bulk anisotropy; shifted magnetization curves; ultrathin Co films on stepped Cu(100); uniaxial anisotropy; Anisotropic magnetoresistance; Laboratories; Magnetic anisotropy; Magnetic field measurement; Magnetic fields; Magnetic films; Magnetic hysteresis; Magnetization; Perpendicular magnetic anisotropy; Switches;
Journal_Title :
Magnetics, IEEE Transactions on
