J. Phys. Colloques
Volume 41, Numéro C8, Août 1980Fourth International Conference on Liquid and Amorphous Metals
|Page(s)||C8-650 - C8-653|
J. Phys. Colloques 41 (1980) C8-650-C8-653
MAGNETIC PROPERTIES AND KERR ROTATION IN AMORPHOUS Ce-Fe AND Pr-Fe ALLOYSK.H.J. Buschow et P.G. Van Engen
Philips Research Laboratories, Eindhoven, The Netherlands
Several amorphous Ce-Fe and Pr-Fe alloys were prepared by means of vapour-deposition and their magnetic properties were studied. The Ce1-xFex alloys are ferromagnetic with magnetic ordering temperatures below room temperature, even for Fe concentrations as high as 90 at% Fe. In the Pr1-xFex alloys magnetic ordering appears to be more complex than ferromagnetic. Magnetic ordering temperatures are in excess of room temperature. At low temperatures the intrinsic coercive force is appreciable. At higher temperature it decreases strongly according to the relation IHc-1αT. Due to the low ordering temperature the room temperature Kerr rotation is very low in Ce1-xFex. Much higher values are observed in Pr1-xFex. Here the concentration dependence of the Kerr rotation gives rise to a maximum near 80 at% Fe.