INFLUENCE OF ND CONTENT ON MAGNETIC-PROPERTIES OF AMORPHOUS FE-B ALLOYS

The influence of the addition of Nd on the magnetic properties (T-C, M (0), H-c,...) of Fe-B amorphous alloys is investigated. Using Chudnovs ky's model we have analyzed our data and obtained some fundamental par ameters, For instance, with the addition of Nd atoms the local anisotr opy is 2.0 X 10(7) erg cm(-3) and the exchange constant A decreases fr om 38 X 10(-8) to 21.7 X 10(-8) erg cm(-1) as the Nd concentration inc reases from 0 to 15%. The ferromagnetic exchange correlation length al so decreases drastically from 353 to 80 Angstrom in the same concentra tion range.