“…These parameters suggest the Zener relaxation [1,2] to operate, i.e. stress-assisted thermally activated reorientations of solute atom pairs in the present alloy with some low degree of B2 order [21]. A slight indication of another peak, around 670 K for f ¼ 1.5 Hz, can be observed only during first heating after quenching from 1000 K, but nearly completely disappears in the second run after heating to 873 K. It should be noted that the interpretation of P4 as a Zener peak is supported by recent Fe 59 tracer diffusion results in Fe-Ge [29] where an activation enthalpy of about 2.5 eV has been found.…”