Anharmonicity 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

15 Citations (Scopus)


In order to examine the pressure effect on the anharmonicity of Au, EXAFS spectra near Au L3-edge were measured at the temperature range from 300 to 1000 K under pressures up to 14 GPa using large volume high-pressure devices and synchrotron radiation. The values of EXAFS Debye-Waller factors, σ2 and σ3, become smaller with the increase of pressure, which indicates that the potential width become narrower with pressure. 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 coefficient of thermal expansion has also been evaluated.

Original languageEnglish
Pages (from-to)235-239
Number of pages5
JournalSolid State Communications
Issue number5
Publication statusPublished - 2002 Feb 11
Externally publishedYes


  • A. Metals
  • C. EXAFS
  • D. Anharmonicity

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry


Dive into the research topics of 'Anharmonicity of gold under high-pressure and high-temperature'. Together they form a unique fingerprint.

Cite this