Quasi-elastic neutron scattering studies were made of Al50Cu35Ni15. It was found that frequent jumps of Cu and Ni atoms between various interstitial lattice positions took place in this alloy at high temperatures; thus indicating that hopping motions were not restricted to systems having a quasicrystalline local order.

Diffusive Motions in a Crystalline Al50Cu35Ni15 Alloy. U.Dahlborg, W.S.Howells, M.Calvo-Dahlborg, J.M.Dubois: Materials Science and Engineering A, 2001, 294-296, 670-4