Crosscheck of Pt and Au pressure scales and EOS of Bi to megabar pressures

Singh, AK and Akahama, Y and Kawamura, H (2002) Crosscheck of Pt and Au pressure scales and EOS of Bi to megabar pressures. Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu, 12 (1). pp. 63-68.

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Abstract

The volume compression of Bi, Pt and Au has been measured to megabar pressures by x-ray powder-diffraction experiments using a synchrotron radiation source. The EOS's of Pt and Au as the pressure scale have been crosschecked up to 145 GPa, and a considerable inconsistency between them is revealed in the megabar pressure region. The EOS of Au has been determined up to the megabar pressure range by the Pt scale. Stability of the high-pressure bcc phase of Bi is confirmed up to 222 GPa. The equation of state (EOS) of bcc-Bi is determined in a megabar pressure range with the bulk modulus, Bo = 35.45(26) GPa, its pressure derivative, Bo' = 6.294(32) and the relative atomic volume, V/V0 = 0.8927(8) at atmospheric pressure, respectively.

Item Type: Journal Article
Uncontrolled Keywords: Bismuth; Equation of state; Gold; High pressure; Platinum; Pressure scale; Synchrotron radiation; X-ray diffraction; bismuth; gold; platinum; measurement; pressure; radiation; reaction analysis; review; X ray powder diffraction;
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Other, Other
Depositing User: MS Jayashree S
Date Deposited: 07 Jan 2005
Last Modified: 24 May 2010 09:38
URI: http://nal-ir.nal.res.in/id/eprint/64

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