Title :
Shape effect on the magnetic anisotropy of an array of epitaxial (10·0) Co dots
Author :
Kohda, T. ; Otani, Y. ; Novosad, V. ; Fukamichi, K. ; Yuasa, S. ; Nyvlt, M. ; Katayama, T.
Author_Institution :
Dept. of Mater. Sci., Tohoku Univ., Sendai, Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
The competition between the magnetocrystalline and shape anisotropies was studied by using a submicron-size epitaxial (10·0) Co rectangular dots array. The measured torque curves exhibit the magnetic anisotropy with a four-fold symmetry, indicating a clear magnetic easy-axis reorientation. The results were successfully interpreted by taking into account the first order magnetocrystalline, shape and non-negligible second order magnetocrystalline anisotropies
Keywords :
cobalt; ferromagnetic materials; magnetic anisotropy; magnetic epitaxial layers; magnetic particles; quantum dots; Co; epitaxial Co dots; four-fold symmetry; magnetic anisotropy; magnetic easy-axis reorientation; magnetocrystalline anisotropies; shape anisotropies; shape effect; torque curves; Anisotropic magnetoresistance; Atomic force microscopy; Magnetic anisotropy; Magnetic force microscopy; Magnetic materials; Magnetostatics; Perpendicular magnetic anisotropy; Shape; Torque measurement; US Department of Transportation;
Journal_Title :
Magnetics, IEEE Transactions on
