Amorphous rare‐earth RE(Gd, Tb, Dy, Ho, Er) ‐Fe films prepared by cosputtering were studied. The compositional analysis was obtained from known deposition profiles, x‐ray microanalysis, and the stripe‐width measurements. The structural variation with composition change was investigated by electron diffraction and dark‐field microscopy. The Curie temperatureTc, the compensation temperatureTcomp, the coercive forceHc, the uniaxial anisotropy energyKuand the static domain properties such as the stripe widthWs, the wall energy &sgr;w, and the exchange stiffness constantAwere investigated. The systematic variation ofTcandTcompassociated with a variation of composition and RE species could be described by the Heimanetal. model. The static domain properties could be interpreted in terms of the wall energy model and the mean field approximation of the exchange stiffness constantA.