Compositional dependence of the effective magnetic anisotropy in nanocrystalline Fe-Zr-B-(Cu) alloys

Results are presented on the evolution with the thermal treatment parameters of the effective anisotropy and dispersion fields and of the saturation magnetostriction of samples having nominal compositions given by Fe93-xZr7BxCuy (x = 6-8 and y = 0-2). From these data we conclude that the enhancement of the soft magnetic character of the samples induced by the anneals carried out in the temperature range 480-600 degrees C could be linked both to the decrease of the anisotropy field and to the reduced magnetostriction values resulting from the thermal treatments. (C) 1998 American Institute of Physics. [S0021-8979(98)36711-0].