Pressure dependence of magnetic properties of amorphous RE - TM thin films

Abstract
The pressure dependence of the Curie temperature of various amorphous RE‐TM alloys (prepared by electron beam coevaporation), having 100<Tc<400 K, was measured. In all cases relatively large negative dTc/dP values were found, similar to those for crystalline RE‐TM intermetallic compounds. This implies that the lower Tc of the amorphous alloys (20–300 K lower than of the corresponding crystalline phases) cannot be simply ascribed to the lower densities of the amorphous alloys. Like we have found previously for the crystalline compounds, the dTc/dP values for the amorphous RE‐TM alloys agree qualitatively with the itinerant model of band ferromagnetism.6,7