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

MaoShuang Song, Akira Yoneda, Eiji Ito

Research output: Contribution to journalArticle

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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 2007

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anvils
hydrostatic pressure
ultrasonics
gold
single crystals
equations of state
elastic properties
bulk modulus
P waves
ambient temperature
room temperature
temperature

Keywords

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

ASJC Scopus subject areas

  • General

Cite this

Ultrasonic measurements of single-crystal gold under hydrostatic pressures up to 8 GPa in a Kawai-type multi-anvil apparatus. / Song, MaoShuang; Yoneda, Akira; Ito, Eiji.

In: Chinese Science Bulletin, Vol. 52, No. 12, 06.2007, p. 1600-1606.

Research output: Contribution to journalArticle

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