Ordering kinetics of chemically synthesized FePt nanoparticles

FePt is a very interesting magnetic material and many attempts have been made towards the lowering of its ordering temperature. Addition of Au and Ag seems to be a satisfying solution, since it can reduce the annealing temperature by 100–150 °C. In the present work, FePtAu and FePtAg nanoparticles have been synthesized via a modification of the polyol method in different compositions. The ideal percentage of the third metal was chosen in order to study its effect on the transformation to the L10L10 phase. Some attempts have been made to study the ordering kinetics and the role of the third metal.