Abstract
Mössbauer spectra have been investigated for Fe clusters precipitated in a sputter (SP)-deposited nonequilibrium Fe11Cu89 alloy, and compared with one produced by cluster beam (CB) deposition. With annealing time of the SP-deposited alloy the number of isolated atoms (monomer) does not change at the first stage, but, the number of small clusters decreases and that of large clusters (γ-Fe) increases. This is attributable to Ostwald ripening. Moreover, the size of Fe clusters is more uniform in the CB-deposited alloy than in the SP-deposited alloy after annealing at 573 K for 98.8 ks.