High pressure equation of state studies using methanol-ethanol-water and argon as pressure media

Godwal, B. K. ; Speziale, S. ; Clark, S. M. ; Yan, J. ; Jeanloz, R. (2010) High pressure equation of state studies using methanol-ethanol-water and argon as pressure media Journal of Physics and Chemistry of Solids, 71 (8). pp. 1059-1064. ISSN 0022-3697

Full text not available from this repository.

Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00223...

Related URL: http://dx.doi.org/10.1016/j.jpcs.2010.03.006

Abstract

We have measured the equation of state of the intermetallic compound AuIn2 up to 20 GPa and Cd0.8Hg0.2 up to 50 GPa using methanol-ethanol-water solution or argon as pressure media. In the experiments performed with argon as pressure medium, we minimized non-hydrostatic conditions by thermally annealing the sample. We present data revealing compressibility anomalies in AuIn2 at 2.7 GPa and in Cd0.8Hg0.2 near 8, 18 and 34 GPa with methanol-ethanol-water and argon. At pressures above 5 GPa the P-V data for AuIn2 and Cd0.8Hg0.2 from experiments preformed with argon as a pressure medium start deviating from those using methanol-ethanol-water, and the equation of state based on experiments in argon is stiffer compared with that in methanol-ethanol-water. This behavior is consistent with the relative merits of the two pressure transmitting media as documented in the literature. We also provide a brief summary of the results of electronic structure calculations that associate these anomalies with electronic topological transitions.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:A. Alloy; C. High Pressure; C. X-Ray Diffraction; D. Equation Of State; D. Electronic Structure
ID Code:11740
Deposited On:13 Nov 2010 13:58
Last Modified:02 Jun 2011 08:35

Repository Staff Only: item control page