Magnetic and structural properties of YCo/sub 5-x/Cu/sub x/

The influence of the addition of Cu in the YCo/sub 5/ matrix, YCo/sub 5-x/Cu/sub x/ with 0/spl les/x/spl les/3, on magnetic and structural properties was investigated. With increasing Cu concentration a decreasing saturation magnetization, anisotropy energy and Curie temperature were obtained. Contrary to the results obtained in Sm(Co,Cu)/sub 5/ alloys neither an enhancement of the coercive force nor a dH/dt dependence of the coercive force was found. The temperature dependencies of both the saturation magnetization and magnetic anisotropy constant K/sub 1/ for YCo/sub 3/Cu/sub 2/ were analyzed using the spin-wave and Yang model, respectively.