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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    12 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 2007

    Keywords

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

    ASJC Scopus subject areas

    • General

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