A. Gangulee, F.M. d'Heurle
Scripta Metallurgica
Saturation magnetizations and magnetic anisotropy constants were determined for a series of amorphous GdCo films prepared by thermal evaporation. The films covered the composition range from Gd0.05Co0.95 to Gd0.40Co0.60 and were studied by means of ferromagnetic resonance and a force balance magnetometer. The films, in contrast to those prepared by sputtering, had a hard perpendicular direction of magnetization when Co was less than 91 at.%, and easy and moderate directions within the plane of the film. The anisotropy constant can be expressed in terms of sublattice magnetizations by Ku=0.660MCo2 +2.218M CoMGd+0.097MGd2. The results are explained based on a pair-ordering mechanism. The composition and temperature dependence of saturation magnetization is essentially the same in evaporated and sputtered films.
A. Gangulee, F.M. d'Heurle
Scripta Metallurgica
A. Gangulee, J.A. Aboaf, et al.
Journal of Applied Physics
F.M. D'Heurle, A. Gangulee
Thin Solid Films
R.J. Kobliska, J.A. Aboaf, et al.
Applied Physics Letters