Atomic probe measurements were made of Cu/Ni nanolayers. By using Matano analyses, the concentration-dependent interdiffusion coefficients at temperatures ranging from 653 to 703K were deduced. It was found that the activation energy for interdiffusion was equal to 2.04eV for an 80%Cu alloy, and equal to 1.98eV for a 40%Cu alloy.

C.Keilonat, E.Camus, N.Wanderka, H.Wollenberger: Applied Physics Letters, 1994, 65[17], 2007-8