Determination of the Ferromagnetic Curie Temperature for Fe40Ni40P14B6 (Metglas 2826)

Abstract
Magnetization of amorphous Fe40Ni40P14B6 (Metglas 2826) has been determined as a function of temperature between 320 K and 740 K. The Arrott-Belov-Kouvel (ABK) plots have been constructed for this material. The parabolic extrapolations give the ferromagnetic Curie temperature T c = (520 ± 2) K which is identical to that obtained by the kink-point method in 50 Oe applied field.