Magnetic Phase-Diagram In Fex Sn1-X Amorphous-Alloys

Amorphous Fe x Sn 1-x alloys have been prepared by a vapour deposition technique and their magnetic properties have been investigated. Competition of ferro- and antiferromagnetic interaction results in quite a complex behaviour : x > 0.45 corresponds to alloys with a typical ferromagnetic order and a transition to a paramagnetic state at a Curie temperature T c ; at intermediate composition (0.40 M is a spin-glass-like transition and a second one at T c > T M is from ferro- to paramagnetism; the alloys on the tin side (0.25 M or remain paramagnetic (x < 0.25) whatever the temperature.