The High-Pressure Melt Curve and Phase Diagram of Lithium
Abstract
We investigate the phase diagram of lithium at temperatures of 200 to 400 K, to pressures over 100 GPa using x-ray diffraction in diamond anvil cells, covering the region in which the melting curve is disputed. To overcome degradation of the diamond anvils by dense lithium we utilize a rapid compression scheme taking advantage of the high flux available at modern synchrotrons. Our results show the hR1 and cI16 phases to be stable to higher temperature than previously reported. The melting minima of lithium is found to be close to room temperature between 40 and 60 GPa, below which the solid is crystalline. Analysis of the stability fieldsof the cI16 and oC88 phases suggest theexistence of atriple point betweenthese and an undetermined solid phase at 60 GPa between 220 and 255 K.
- Authors:
-
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States). Physics Dept.
- Argonne National Lab. (ANL), Argonne, IL (United States).X-ray Science Division
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1542457
- Alternate Identifier(s):
- OSTI ID: 1547982; OSTI ID: 1562309
- Grant/Contract Number:
- AC02-76SF00515; AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 123; Journal Issue: 6; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; High-pressure Lithium Melting
Citation Formats
Frost, Mungo, Kim, Jongjin B., McBride, Emma E., Peterson, J. Ryan, Smith, Jesse S., Sun, Peihao, and Glenzer, Siegfried. The High-Pressure Melt Curve and Phase Diagram of Lithium. United States: N. p., 2019.
Web. doi:10.1103/PhysRevLett.123.065701.
Frost, Mungo, Kim, Jongjin B., McBride, Emma E., Peterson, J. Ryan, Smith, Jesse S., Sun, Peihao, & Glenzer, Siegfried. The High-Pressure Melt Curve and Phase Diagram of Lithium. United States. https://doi.org/10.1103/PhysRevLett.123.065701
Frost, Mungo, Kim, Jongjin B., McBride, Emma E., Peterson, J. Ryan, Smith, Jesse S., Sun, Peihao, and Glenzer, Siegfried. Mon .
"The High-Pressure Melt Curve and Phase Diagram of Lithium". United States. https://doi.org/10.1103/PhysRevLett.123.065701. https://www.osti.gov/servlets/purl/1542457.
@article{osti_1542457,
title = {The High-Pressure Melt Curve and Phase Diagram of Lithium},
author = {Frost, Mungo and Kim, Jongjin B. and McBride, Emma E. and Peterson, J. Ryan and Smith, Jesse S. and Sun, Peihao and Glenzer, Siegfried},
abstractNote = {We investigate the phase diagram of lithium at temperatures of 200 to 400 K, to pressures over 100 GPa using x-ray diffraction in diamond anvil cells, covering the region in which the melting curve is disputed. To overcome degradation of the diamond anvils by dense lithium we utilize a rapid compression scheme taking advantage of the high flux available at modern synchrotrons. Our results show the hR1 and cI16 phases to be stable to higher temperature than previously reported. The melting minima of lithium is found to be close to room temperature between 40 and 60 GPa, below which the solid is crystalline. Analysis of the stability fieldsof the cI16 and oC88 phases suggest theexistence of atriple point betweenthese and an undetermined solid phase at 60 GPa between 220 and 255 K.},
doi = {10.1103/PhysRevLett.123.065701},
journal = {Physical Review Letters},
number = 6,
volume = 123,
place = {United States},
year = {Mon Aug 05 00:00:00 EDT 2019},
month = {Mon Aug 05 00:00:00 EDT 2019}
}
Web of Science
Figures / Tables:
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