Thermal expansion calculated by Continuous Displacement Cluster Variation Method

Tetsuo Mohri

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Thermal expansion of a single component system in a two dimensional square lattice is calculated by employing Continuous Displacement Cluster Variation Method. It is demonstrated that the entropy effect arising from the freedom of local atomic displacements drives the thermal expansion. The coefficient of thermal expansion curve is compared with the one calculated based on Debye-Griineisen model within the quasi-harmonic approximation. The two curves demonstrate opposite behavior.

Original languageEnglish
Pages (from-to)2515-2520
Number of pages6
JournalMaterials Transactions
Volume49
Issue number11
DOIs
Publication statusPublished - 2008 Nov

Keywords

  • Cluster variation method
  • Continuous displacement cluster variation method
  • Thermal expansion, square lattice

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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