Mixture of ordered domains in the NiAl(111) surface

Journal Article · Mon Oct 12 00:00:00 EDT 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.59.1714· OSTI ID:6041073

Noonan, J R; Davis, H L

The atomic structure of the NiAl(111) surface has been investigated through a LEED I-V analysis. In order to achieve a unique, consistent agreement between experimental and calculated I-V spectra, this surface is determined to be a 50-50 mixture of two ordered domains, one of which is Al terminated and the other is Ni terminated. The relaxations of the outermost interlayer spacings in each domain have been determined as well, and they are different for the two domains. The NiAl(111) surface is the first reported example of a binary-alloy surface in which a mixture of ordered domains with differing terminations coexists.

• Research Organization: Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6024
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6041073
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 59:15; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
ALUMINIUM ALLOYS
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRON DIFFRACTION
LAYERS
NICKEL ALLOYS
RELAXATION
SCATTERING
SURFACES