OBSERVATIONS OF PERCOLATION STRUCTURES INDUCED IN THIN SOLID FILMS BY ION IRRADIATION

Percolation structures of precipitated new phases were observed in Au-Ti and Ni-A1 amorphous films upon ion irradiation. The experimental evidences showed that the observed structures were formed in the surface layer, ca 20nm thick. It was revealed that the formation of percolation clusters was sensitive to alloy composition as well as irradiation dose.