2008/02/15 by P. Süle, Süle, P., M. Menyhárd +1 · 1 citation
Earth and Planetary Sciences · Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Intermetallics and Advanced Alloy Properties #Materials Science (cond-mat.mtrl-sci) #Microstructure and mechanical properties #cond-mat.mtrl-sci #nanoparticles nucleation surface interactions
paper · pdf · doi:10.48550/arxiv.0802.2220
4 pages, 3 figures
openalex publication_date 2008/02/15 · arxiv created 2008/02/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
Probing the anomalous nanoscale intermixing using molecular dynamics (MD) simulations in Pt/Ti bilayer we reveal the superdiffusive nature of interfacial atomic transport. It is shown that the Pt atoms undergo anomalous atomic transport across the anisotropic interface of Pt/Ti with suprisingly high rates which can be characterized as Lévy flights. Lévy flight is not a unique phenomenon in nature, however, no such events have been reported yet for bulk interdiffusion. In particular, the low-energy (0.5 keV) ion-sputtering induced transient enhanced intermixing has been studied by MD simulations. Ab initio density functional calculations have been used to check and reparametrize the employed heteronuclear interatomic potential. The Lévy-intermixing behavior explains the high diffusity tail in the concentration profile obtained by Auger electron spectroscopy depth profiling (AES-DP) analysis in Pt/Ti bilayer (reported in ref.: P. Süle, \em et al., J. Appl. Phys., \bf 101, 043502 (2007)).