Abstract
A model of atomistic nature is presented to interpret experimental data on glass formation, as well as crystalline structure achievement, or retainment in samples undergoing ion implantation, or ion mixing.
The essential features of the irradiation-induced highly nonequilibrium state created within the target, namely spike formation and evolution and surface stoichiometry alterations, form the basis of the model.
In binary alloys, atoms of one kind are supposed to preferentially migrate to the surface, where the excess stoichiometry causes interatomic interactions with charge transfer to occur.
The obtained effective atom pairs exhibit different surface properties from those of the starting alloys.
On the basis of the above behaviour, the model allows to identify qualitative physical differences between glass forming systems and crystalline ones.
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Ossi, P.M. Local charge transfer and stability of amorphous systems produced by ion beam irradiation. Z. Physik B - Condensed Matter 69, 511–519 (1988). https://doi.org/10.1007/BF01312513
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DOI: https://doi.org/10.1007/BF01312513