The stress state in bismuth to 298 GPa and its use as a pressure transmitting medium and pressure marker at multi-megabar pressures
Journal Article
·
· Journal of Applied Physics
- University of Edinburgh, Scotland (United Kingdom)
- AWE, Aldermaston (United Kingdom)
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
We have conducted diffraction studies of bismuth (Bi) to 298 GPa using both conventional and toroidal diamond anvil cells (DACs) to investigate its suitability as a pressure-transmitting medium (PTM) to such pressures. Using microfocused x-ray beams, we have determined the pressure dependence of the uniaxial stress component (t) in cubic Bi-V from 7 to 298 GPa and find that at 298 GPa, t < 0.5 GPa. Bi-V, therefore, cannot support significant shear stresses, making it an excellent PTM. We have also measured the compressibility of Bi-V against that of copper (Cu) and gold (Au), allowing it to be used as a pressure marker as well as a PTM.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- Engineering and Physical Sciences Research Council (EPSRC); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-06CH11357; AC52-07NA27344
- OSTI ID:
- 2274878
- Report Number(s):
- LLNL--JRNL-857141; 1076037
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 24 Vol. 133; ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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