L. Thome et J. Jagielski, INFLUENCE OF NUCLEAR-ENERGY DEPOSITION DENSITY ON THE ION-BEAM MIXINGOF METALLIC BILAYERS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 106(1-4), 1995, pp. 65-67
The influence of nuclear energy deposition density (epsilon) on the io
n-beam mixing process is studied in the case of Ni-Zr and Fe-Zr bilaye
rs. Nickel and iron crystals covered with a thin zirconium layer were
irradiated at liquid nitrogen temperature with ions of various masses
(from N to Xe), which provide values of epsilon in the range 25-440 eV
/Angstrom. The mixing parameters were determined via in situ RES durin
g irradiation. The variance of the distribution function of mixed atom
s (sigma(2)) is found to increase linearly with the ion fluence for al
l the ions used in the experiment. The mixing rate exhibits a linear v
ariation with epsilon, above a threshold of similar to 25 eV/Angstrom,
for the two systems studied.