Structure of vicinal surfaces of alloys: Cu–Pd(17%)(1 1 5)

• Published in: Surface science 2001-06, Vol.481 (1), p.215-225
• Main Authors: Le Goff, E., Arfaoui, I., Barbier, L., Loiseau, A., Salanon, B.
• Format: Article
• Language: English
• Subjects: Alloys; Applied sciences; Condensed matter: structure, mechanical and thermal properties; Copper; Electron, ion, and scanning probe microscopy; Exact sciences and technology; Metals. Metallurgy; Palladium; Physics; Scanning probe microscopy: scanning tunneling, atomic force, scanning optical, magnetic force, etc; Scanning tunneling microscopy; Solid surfaces and solid-solid interfaces; Step formation and bunching; Structure of solids and liquids; crystallography; Surface structure and topography; Surface structure, morphology, roughness, and topography; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Vicinal single crystal surfaces
• ISSN: 0039-6028; 1879-2758
• DOI: 10.1016/S0039-6028(01)01042-1

An even single step structure is observed by scanning tunneling microscopy for the Cu–Pd(17%)(1 1 5) surface in the chemically ordered phase. This is in contrast with the paired step structure of vicinals of (0 0 1) and (1 1 0) surfaces with higher average step–step distance of A 3B L1 2 alloys. The three possible structures for vicinal surfaces involving steps and subsurface antiphase boundaries (APBs) are compared. The observation of a paired step structure for Cu–Pd(17%)(1 1 11) and of a single step structure for (1 1 5) allows estimating the subsurface APB energy.