Segregation profiles in Cu3Au above the order-disorder transition.

  title={Segregation profiles in Cu3Au above the order-disorder transition.},
  author={Mecke and Dietrich},
  journal={Physical review. B, Condensed matter},
  volume={52 3},
  • Mecke, Dietrich
  • Published 1995
  • Physics, Medicine
  • Physical review. B, Condensed matter
26 Citations
Effect of surface steps on chemical ordering in the subsurface of Cu(Au) solid solutions
Atomic steps are typically assumed to only influence surface phenomena of solids. In contrast, here we show, using in situ atomic-resolution electron microscopy observations and atomistic modeling,Expand
Tuning the surface composition of Cu3Au binary alloy.
These measurements demonstrated the tunability of the surface composition of the binary alloy by utilizing the interplay between the tendency of segregating a more noble constituent to the surface and the tendency to segregate the more reactive one with the chemical stimuli. Expand
Stability diagram of Janus and core-shell configurations in bimetallic nanowires
Alloy nanoparticles can exhibit several different structures due to segregation and phase separation. In the case of an alloy with a tendency to phase separate, the core–shell (CS) configuration andExpand
Surface segregation phenomena in extended and nanoparticle surfaces of Cu–Au alloys
Abstract Using density functional theory (DFT) and Monte Carlo (MC) simulations, we studied the surface segregation phenomena of Au atoms in the extended and nanoparticle surfaces of Cu–Au alloys.Expand
Femtosecond electron solvation at the ionic liquid/metal electrode interface.
This study observations at the interface of a room temperature ionic liquid and an Ag(111) electrode support morphology dependent and interface specific electron solvation mechanisms in bulk ionic liquids. Expand
Chemical Order and Disorder in Alloys
Chemical ordering in bulk alloys has been studied for a long time, and microscopic theories are now well developed, both from the electronic structure point of view and from the statistical physicsExpand
Segregation and Phase Transitions in Reduced Dimension: From Bulk to Clusters via Surfaces
To describe the thermodynamics of bimetallic clusters, we use approaches that have been successfully employed for bulk alloys and their surfaces. We detail what happens for bulk and surface phaseExpand
Study of the structural and atomic diffusive properties of the ordered Cu3Au (110) surface
The structural properties, the formation and migration energies of a single vacancy migrating intralayer and interlayer in the CuAu-terminated (110) surface of Cu3Au ordered alloy have beenExpand
Thermodynamic stability of nanometre-sized Cu₃Au systems.
  • F. Delogu
  • Materials Science, Medicine
  • Nanotechnology
  • 2011
It is shown that the system underwent rapid fluctuation in the chemical order degree related to the formation of vacancies and of atoms with defective coordination as well as the change of free energy differences with temperature was employed to identify the transition temperatures. Expand
The mechanism of chemical disordering in Cu3Au nanometre-sized systems
Classical molecular dynamics simulations have been employed to investigate the order?disorder transformation in Cu3Au unsupported particles in the mesoscale regime between 1 and 10?nm. TheExpand