Abstract
Results are presented which describe the effect of the deposition parameters of aluminium underlayers on the magnetic properties of non-magnetostrictive NiFeCo films. Three aluminium film deposition parameters were considered: evaporation rate, substrate temperature and film thickness. The effects of these parameters on the structure of the aluminium film and on the coercivity, angular dispersion, anisotropy field and saturation magnetization of the subsequent magnetic film in the thickness range 0.06–0.5 μm are reported. A correlation of the angular dispersion with underlayer grain size was established experimentally and is explained in terms of a linear micromagnetic theory of dispersion.
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