Formation of a Novel Ordered Ni3Al Surface Structure by Codeposition on NiAl(110)

TitleFormation of a Novel Ordered Ni3Al Surface Structure by Codeposition on NiAl(110)
Publication TypeJournal Article
Year of Publication2012
AuthorsHan Y, Unal B, Evans JW
Journal TitlePhysical Review Letters
Volume108
Pages216102
Date Published05
Type of ArticleArticle
ISBN Number0031-9007
Accession NumberWOS:000304404700017
Keywordsfilms, ISLANDS
Abstract

The formation of a new type of ordered 2D Ni3Al overlayer by low-temperature codeposition on NiAl (110) is demonstrated by kinetic Monte Carlo simulation of a multisite atomistic lattice-gas model with a precise treatment of surface diffusion kinetics. Simultaneous codeposition with 3:1 Ni:Al yields poor ordering at 300 K but well-ordered structures by similar to 500 K. Sequential codeposition of Ni then Al yields unmixed core-ring nanostructures at 300 K but strong intermixing and ordering by similar to 500 K.

URL<Go to ISI>://WOS:000304404700017
DOI10.1103/PhysRevLett.108.216102
Alternate JournalPhys. Rev. Lett.