Calculation of Short-Range-Order diffuse intensity for a two dimensional square lattice within cluster variation method

H. Uzawa, T. Mohri

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

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 languageEnglish
Pages (from-to)422-424
Number of pages3
JournalMaterials Transactions
Volume42
Issue number3
DOIs
Publication statusPublished - 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

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