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Title: Ultrahigh pressure equation of state of tantalum to 310 GPa

Abstract

The isothermal compression of transition metal tantalum ( Ta) was studied in a diamond anvil cell by x-ray diffraction utilizing rhenium ( Re) and gold ( Au) as internal x-ray pressure standards. The Re pressure marker was employed during non-hydrostatic compression to pressures up to 310 GPa while the Au pressure marker was used during quasi-hydrostatic compression in a neon pressuretransmitting medium to 80 GPa. Two ultra-high pressure experiments were conducted on Ta and Re mixtures utilizing focused-ion beam machined toroidal diamond anvils with central flats varying from 8 microns to 16 microns in diameter. The Ta metal was observed to be stable in the body-centered-cubic phase to a volume compression V/V 0 = 0.581. The measured equations of state (EOS) of Ta using two different calibrations of the Re pressure marker are compared with the ambient temperature isotherm derived from shock compression data. We provide a detailed analysis of EOS fit parameters for Ta under quasi-hydrostatic and non-hydrostatic conditions.

Authors:
 [1];  [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2];  [3];  [4];  [1]
  1. Univ. of Alabama, Birmingham, AL (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
OSTI Identifier:
1558979
Alternate Identifier(s):
OSTI ID: 1562310
Report Number(s):
LA-UR-19-25301
Journal ID: ISSN 0895-7959
Grant/Contract Number:  
89233218CNA000001; AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
High Pressure Research
Additional Journal Information:
Journal Volume: 39; Journal Issue: 3; Journal ID: ISSN 0895-7959
Publisher:
Taylor & Francis
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Tantalum; high-pressure; equation of state; diamond-anvil cell; X-ray diffraction; toroidal diamond anvils; transition metals

Citation Formats

Burrage, Kaleb C., Perreault, Christopher S., Moss, Eric K., Pigott, Jeffrey S., Sturtevant, Blake T., Smith, Jesse S., Velisavljevic, Nenad, and Vohra, Yogesh K. Ultrahigh pressure equation of state of tantalum to 310 GPa. United States: N. p., 2019. Web. doi:10.1080/08957959.2019.1641203.
Burrage, Kaleb C., Perreault, Christopher S., Moss, Eric K., Pigott, Jeffrey S., Sturtevant, Blake T., Smith, Jesse S., Velisavljevic, Nenad, & Vohra, Yogesh K. Ultrahigh pressure equation of state of tantalum to 310 GPa. United States. doi:10.1080/08957959.2019.1641203.
Burrage, Kaleb C., Perreault, Christopher S., Moss, Eric K., Pigott, Jeffrey S., Sturtevant, Blake T., Smith, Jesse S., Velisavljevic, Nenad, and Vohra, Yogesh K. Wed . "Ultrahigh pressure equation of state of tantalum to 310 GPa". United States. doi:10.1080/08957959.2019.1641203.
@article{osti_1558979,
title = {Ultrahigh pressure equation of state of tantalum to 310 GPa},
author = {Burrage, Kaleb C. and Perreault, Christopher S. and Moss, Eric K. and Pigott, Jeffrey S. and Sturtevant, Blake T. and Smith, Jesse S. and Velisavljevic, Nenad and Vohra, Yogesh K.},
abstractNote = {The isothermal compression of transition metal tantalum (Ta) was studied in a diamond anvil cell by x-ray diffraction utilizing rhenium (Re) and gold (Au) as internal x-ray pressure standards. The Re pressure marker was employed during non-hydrostatic compression to pressures up to 310 GPa while the Au pressure marker was used during quasi-hydrostatic compression in a neon pressuretransmitting medium to 80 GPa. Two ultra-high pressure experiments were conducted on Ta and Re mixtures utilizing focused-ion beam machined toroidal diamond anvils with central flats varying from 8 microns to 16 microns in diameter. The Ta metal was observed to be stable in the body-centered-cubic phase to a volume compression V/V0 = 0.581. The measured equations of state (EOS) of Ta using two different calibrations of the Re pressure marker are compared with the ambient temperature isotherm derived from shock compression data. We provide a detailed analysis of EOS fit parameters for Ta under quasi-hydrostatic and non-hydrostatic conditions.},
doi = {10.1080/08957959.2019.1641203},
journal = {High Pressure Research},
number = 3,
volume = 39,
place = {United States},
year = {2019},
month = {7}
}

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