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001-es BibID:	BIBFORM008875
Első szerző:	Erdélyi Zoltán (fizikus)
Cím:	On the determination of the equilibrium surface segregation isotherms form kinetic measurements / Z. Erdélyi, A. Taranovskyy, D. L. Beke
Dátum:	2009
ISSN:	1606-5131
Megjegyzések:	Thirty years ago, Lagues and Domange [1] studying dissolution and segregation kinetics, introduced the s urface local equilibrium hypothesis. This hypothesis is based on the idea that the kinetics (diffusion) is faster in the near surface region (selvedge) than in the bulk and thus it can be assumed that the atoms just below the selvedge can be in equilibrium with the atoms of the deposit. In this contribution, based on our recent work [2], using three dimensional kinetic Monte Carlo (KMC) and one dimensional kinetic mean filed (KMF) models, we show that the local equilibrium can be violated even in simple cases when complex surface phenomena (defects, relaxation, size effects, etc.) are not taken into account. Furthermore we illustrate that, even if the above hypothesis is obeyed, the determination of the surface segregation isotherms from kinetics can lead to uncertain result because of the restricted validity of Fick's first equation on the nanoscale.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Reviews on Advanced Materials Science . - 21 : 1 (2009), p. 6-17. -
További szerzők:	Taranovskyy, Andriy Beke Dezső László (1945-) (fizikus)
Internet cím:	elektronikus változat
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