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Co/Pd multilayers with various Co and Pd layer thicknesses are prepared by e-gun evaporation. The microstructure of the multilayers consists of polycrystals and varies with the thicknesses of Co and Pd layers. Magnetic anisotropy is observed changing with the layer thicknesses, and perpendicular magnetic anisotropy is obtained when the Co layer was thinner than ≈0.6 nm. It is found that the Co atom polarized its neighbouring Pd atoms and the polarization related to the magnetic property change is influenced by the microstructure of the multilayers.
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Yang et al. (1994) studied this question.
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