title: Formation of a novel ordered Ni3Al surface structure by codeposition on NiAl(110).
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 ~500 K. Sequential codeposition of Ni then Al yields unmixed core-ring nanostructures at 300 K but strong intermixing and ordering by ~500 K.
authors.affiliation: Institute for Physical Research and Technology, Iowa State University, Ames, Iowa 50011, USA. yong@ameslab.gov
authors.forename: Yong
authors.initials: Y
authors.lastname: Han
authors.forename: Barış
authors.initials: B
authors.lastname: Unal
authors.forename: J W
authors.initials: JW
authors.lastname: Evans