Fig. 2

Relative change in magnetization dynamics sensitive to Ni, Fe \(\hbox {M}_{2,3}\) and Pt \(\hbox {N}_{6,7}\) edge for (a) FeNi(30) and (b) FeNi(6)/FePt. The inset highlights the extended recovery time, indicating prolonged relaxation processes in the thicker FeNi layer.