Abstract
Perpendicular magnetic anisotropy (PMA) up to 6.15±1.25 Å Co thickness is found for ferromagnetically coupled epitaxial Co/60 Å Ni/Cu/Si(0 0 1) structures. Polarized neutron reflection measurements on a Cu/9 ÅCo/Ni/Cu(0 0 1) structure yield almost bulk like magnetic moments at room-temperature of 1.70±0.20 μ B and 0.57±0.05 μ B for Co and Ni, respectively. Magneto-optic Kerr effect measurements show that the uniaxial Co volume anisotropy is entirely attributed to the Co shape anisotropy due to an absence of strain in the Co film.
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