Static and dynamic magnetic properties of mechanically alloyed Fe9Cu5Ag86

The static and dynamic magnetic behaviors of mechanically alloyed Fe9Cu5Ag86 have been investigated by field-dependent DC magnetization and frequency-dependent AC susceptibility. The results reveal the coexistence of small Fe particles and ferromagnetic particles of larger size. Rietveld refinement of the X-ray diffraction patterns confirms the existence of nanometric Fe grains (similar to 6 nm) and of Ag (similar to 18 nm). Despite the low Fe content, the existence of interactions among the magnetic particles is evident, as deduced from Henkel plots. (C) 2003 Elsevier B.V. All rights reserved.