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

• Main Authors: Han, Yong (Author), Unal, Baris (Contributor), Evans, J. W. (Author)
• Other Authors: Massachusetts Institute of Technology. Department of Chemical Engineering (Contributor)
• Format: Article
• Language: English
• Published: American Physical Society, 2012-07-18T20:08:23Z.
• Subjects: Article
• Online Access: Get fulltext

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
National Science Foundation (U.S.) (Grant No. CHE- 1111500)
United States. Dept. of Energy (Contract No. DE-AC02-07CH11358)