Anharmonic effective pair potentials of gold under high pressure and high temperature

M. Okube, A. Yoshiasa, O. Ohtaka, H. Fukui, Y. Katayama, W. Utsumi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

In order to examine the effect of pressure on the anharmonicity of Au, extended x-ray absorption fine-structure spectra near the Au L3 edge were measured in the temperature range from 300 to 1100 K under pressures up to 14 GPa using large-volume high-pressure devices and synchrotron radiation. The anharmonic effective pair potentials of Au, V(u) = au2/2! + bu3/3!, at 0.1 MPa, 6 and 14 GPa have been calculated. The pressure dependence of the thermal expansion coefficients has also been evaluated. The reliability of the anharmonic correction proposed on the basis of the Anderson scale has been discussed.

Original languageEnglish
Pages (from-to)11511-11515
Number of pages5
JournalJournal of Physics Condensed Matter
Volume14
Issue number44 SPEC ISS.
DOIs
Publication statusPublished - 2002 Nov 11

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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