Extending the single-crystal quartz pressure gauge up to hydrostatic pressure of 19 Gpa
- Author(s)
- Katharina Sarah Scheidl, Alexander Kurnosov, Dmytro M. Trots, Tiziana Boffa Ballaran, Ross J. Angel, Ronald Miletich-Pawliczek
- Abstract
In situ high-pressure diffraction experiments on single-crystal α-quartz under quasi-hydrostatic conditions up to 19 GPa were performed with diamond-anvil cells. Isotropic pressures were calibrated through the ruby-luminescence technique. A 4:1 methanol-ethanol mixture and the densified noble gases helium and neon were used as pressure media. The compression data revealed no significant influence of the pressure medium at room temperature on the high-pressure behavior of α-quartz. In order to describe its compressibility for use as a pressure standard, a fourth-order Birch-Murnaghan equation of state (EoS) with parameters K
T0 = 37.0 (3) GPa, K
T0′ = 6.7 (2) and K
T0″ = -0.73 (8) GPa
-1 was applied to fit the data set of 99 individual data points. The fit of the axial compressibilities yields M
T0 = 104.5 (8) GPa, M
T0′ = 13.7 (4), M
T0″ = -1.04 (11) GPa
-1 (a axis) and M
T0 = 141 (3) GPa, M
T0′ = 21 (2), M
T0″ = 8.4 (6) GPa
-1 (c axis), confirming the previously reported anisotropy. Assuming an estimated standard deviation of 0.0001% in the quartz volume, an uncertainty of 0.013 GPa can be expected using the new set of EoS parameters to determine the pressure.α-Quartz has been re-investigated up to 19 GPa in various pressure media to provide precise equation-of-state parameters for its wide applicability as an internal diffraction standard in high-pressure experiments with diamond-anvil cells.
- Organisation(s)
- Department of Mineralogy and Crystallography
- External organisation(s)
- Universität Bayreuth, University of Padova
- Journal
- Journal of Applied Crystallography
- Volume
- 49
- Pages
- 2129-2137
- No. of pages
- 9
- ISSN
- 0021-8898
- DOI
- https://doi.org/10.1107/S1600576716015351
- Publication date
- 09-2016
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105116 Mineralogy, 105113 Crystallography
- Keywords
- ASJC Scopus subject areas
- General Biochemistry,Genetics and Molecular Biology
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/085786ff-f0fa-4520-a764-3f35a0af562e