Study of Random Magnetic Alloys near Their Critical Concentrations under High Pressure

Abstract
The low-field ac magnetic susceptibility of the amorphous (FeMn)PBAl and (FeNi)-PBAl, and the crystalline (PdFe)Mn random magnetic alloys near their critical concentrations was measured under pressure up to 20 kbar between 1 and 300 K. The results support the proposed existence of reentrant ferromagnetism, and show the important role of magnetic clustering in the magnetic behavior of these alloys.