Abstract
The Cluster Variation Method (CVM) within the square approximation is employed to calculate Short-Range-Order diffuse intensity spectrum for a binary alloy in a two dimensional square lattice. The peak intensity at 1 : 1 stoichiometric composition is attained at (kx, ky) = (0.5, 0.5) in the k-space. The instability temperature determined by the calculation of the Short-Range-Order diffuse intensity coincides with the phase boundary, indicating that the transition is of second-order. The integrated intensity in a Brillouin zone is also calculated to examine the level of the approximation.
| Original language | English |
|---|---|
| Pages (from-to) | 422-424 |
| Number of pages | 3 |
| Journal | Materials Transactions |
| Volume | 42 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2001 |
Keywords
- Cluster variation method
- Concentration wave
- Instability temperature
- Ordering wave
- Short-range-order diffuse intensity
- Square approximation
- Square lattice
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering