Ultrasonic measurements of single-crystal gold under hydrostatic pressures up to 8 GPa in a Kawai-type multi-anvil apparatus

Mao Shuang Song, Akira Yoneda, Eiji Ito

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11 Citations (Scopus)

Abstract

Ultrasonic measurements were conducted on single-crystal gold at ambient condition and hydrostatic pressures up to 8 GPa at room temperature in a Kawai-type multi-anvil apparatus. The P-wave velocities measured at high pressures were in good agreement with Daniels and Smith's ultrasonic study. The three independent elastic constants of gold at ambient condition were determined to be C 11=192.7 GPa, C 12=162.9 GPa, and C 44=42.4 GPa. On the basis of an analysis of previous elastic data and the present ultrasonic data, the pressure derivatives of three elastic constants were estimated to be C11 = 7.12, C12 = 6.24, and C44 = 1.82. The calculated values of isothermal bulk modulus (K T0) and its pressure derivatives (K′T0) are K T0 = 166.44 GPa and K′T0 = 6.56. This indicates that Anderson et al.'s model of equation of state of gold might underestimates pressure about 1 GPa at pressure around 23 GPa and ambient temperature. Our results explained the discrepancies among the models of equation of state of gold proposed previously.

Original languageEnglish
Pages (from-to)1600-1606
Number of pages7
JournalChinese Science Bulletin
Volume52
Issue number12
DOIs
Publication statusPublished - Jun 1 2007

Keywords

  • Elasticity
  • High pressure
  • Hydrostatic condition
  • Single-crystal gold
  • Ultrasonic measurement

ASJC Scopus subject areas

  • General

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