High-pressure melting curve of sulfur up to 65 GPa
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Yale Univ., New Haven, CT (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- American School of Dubai, Dubai (United Arab Emirates)
- Yale Univ., New Haven, CT (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
The melting curve of elemental sulfur was measured to pressures of 65 GPa in a laser-heated diamond-anvil cell using ex situ textural analyses combined with spectroradiometry and benchmarked with laser-power-temperature functions. Here, the melting curve reaches temperatures of ~ 1800 K by 65 GPa and is smooth in the range of 23–65 GPa with a Clapeyron slope of ~ 14 K / GPa at 23 GPa. This is consistent with melting of a single tetragonal sulfur structure in this range, which is confirmed by in situ x-ray diffraction. An updated equation of state for tetragonal sulfur is determined, and the high-pressure, high-temperature stability region of tetragonal sulfur is reassessed.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); National Aeronautic and Space Administration (NASA); National Science Foundation (NSF); Carnegie/DOE Alliance Center (CDAC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1562279
- Alternate ID(s):
- OSTI ID: 1557390
OSTI ID: 1579613
OSTI ID: 1581182
OSTI ID: 1689688
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 5 Vol. 100; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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