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

Results are presented on the evolution with the thermal treatment parameter s of the effective anisotropy and dispersion fields and of the saturation m agnetostriction of samples having nominal compositions given by Fe93-xZr7Bx Cuy (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 carri ed out in the temperature range 480-600 degrees C could be linked both to t he decrease of the anisotropy field and to the reduced magnetostriction val ues resulting from the thermal treatments. (C) 1998 American Institute of P hysics. [S0021-8979(98)36711-0].