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Heat spike effects on ion beam mixing

Author:
K. Nordlund   J. Tarus   J. Keinonen   M. Ghaly   R.S. Averback  


Journal:
Nuclear Instruments & Methods in Physics Research, Section B (Beam Interactions with Materials and Atoms)


Issue Date:
2000


Abstract(summary):

Although ion beam mixing has been studied intensively over the last 20 years, many questions about the fundamental mechanisms involved during mixing remain unresolved. We review here recent simulation and experimental work which provides answers to some of the lingering questions about mixing in elemental materials. The results make clear the specific role which thermodynamic material properties, the nature of atomic bonding and electron-phonon coupling can have on ion beam mixing. Agreement obtained by direct comparison of simulated and experimental mixing coefficients gives confidence in our results, indicating that the experimental mixing values in heavy metals can be understood predominantly on the basis of atomic motion in liquid-like zones, and that the role of the electron-phonon coupling on ion beam mixing is much smaller than previously thought


Page:
441-452


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