Abstract
The structure and magnetic properties of thin Co films on Ni3Al(0 0 1) were studied by scanning tunneling microscopy and magneto optical Kerr effect. At 300 K, for 3.5 ML of Co, 2D islands are observed with the diameter distribution centered at ∼45 Å. Annealing at 700 K leads to a coalescence in larger and flat FCC Co(0 0 1) 2D islands. The hysteresis loops show a higher coercivity field for the annealed samples. The samples show a four-fold magnetic anisotropy axis in the (0 0 1) plane. Magnetization out of plane was not found.
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