Published August 1999
| Version v1
Journal article
Short-Range Order and Phase Stability of Surface Alloys: PdAu on Ru(0001)
- 1. Sandia National Laboratories, Livermore, California 94551-0969 (United States)
Description
Structural and thermodynamic properties of thermally equilibrated Pd-Au/Ru(0001) surface alloys are studied within the framework of lattice models based upon first-principles total energy calculations and scanning-tunneling-microscopy imaging of atomic structure. Pd-rich alloys form pseudomorphic solid-solution phases with pronounced chemical short-range order (SRO), consistent with the prediction of a low-temperature order-disorder transition to a (√(3)x√(3) )-R30 degree ground state structure. Calculated and measured SRO parameters are found to be in excellent agreement and are quantitatively described by a lattice-model Hamiltonian dominated by short-ranged interactions. copyright 1999 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 83
- Journal Issue
- 7
- Journal Page Range
- p. 1379-1382
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 30051617
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- GOLD ALLOYS; ORDER-DISORDER TRANSFORMATIONS; PALLADIUM ALLOYS; PHASE STABILITY; RUTHENIUM; SOLID SOLUTIONS; STRUCTURAL CHEMICAL ANALYSIS; THERMODYNAMIC PROPERTIES; THIN FILMS
- Descriptors DEC
- ALLOYS; DISPERSIONS; ELEMENTS; FILMS; METALS; MIXTURES; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; PLATINUM METAL ALLOYS; PLATINUM METALS; SOLUTIONS; STABILITY; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS