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Title: Structural Transformation and Melting in Gold Shock Compressed to 355 GPa

Abstract

Gold is believed to retain its ambient crystal structure to very high pressures under static and shock compression, enabling its wide use as a pressure marker. Our in situ x-ray diffraction measurements on shock-compressed gold show that it transforms to the body-centered-cubic (bcc) phase, with an onset pressure between 150-176 GPa. Liquid/bcc coexistence was observed between 220-302 GPa and complete melting occurs by 355 GPa. Furthermore, our observation of the lower coordination bcc structure in shocked gold is in marked contrast with theoretical predictions and the reported observation of the hexagonal-close-packed structure under static compression.

Authors:
 [1];  [1];  [1];  [2];  [3];  [3];  [3];  [1];  [3];  [3];  [3];  [1]
  1. Washington State Univ., Pullman, WA (United States)
  2. Washington State Univ., Argonne, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Washington State Univ., Argonne, IL (United States)
Publication Date:
Research Org.:
Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10)
OSTI Identifier:
1545791
Alternate Identifier(s):
OSTI ID: 1545420
Grant/Contract Number:  
NA0002007; NA0002442; AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 123; Journal Issue: 4; 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

Citation Formats

Sharma, Surinder M., Turneaure, Stefan J., Winey, J. M., Li, Yuelin, Rigg, Paulo, Schuman, Adam, Sinclair, Nicholas, Toyoda, Y., Wang, Xiaoming, Weir, Nicholas, Zhang, Jun, and Gupta, Y. M. Structural Transformation and Melting in Gold Shock Compressed to 355 GPa. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.123.045702.
Sharma, Surinder M., Turneaure, Stefan J., Winey, J. M., Li, Yuelin, Rigg, Paulo, Schuman, Adam, Sinclair, Nicholas, Toyoda, Y., Wang, Xiaoming, Weir, Nicholas, Zhang, Jun, & Gupta, Y. M. Structural Transformation and Melting in Gold Shock Compressed to 355 GPa. United States. doi:10.1103/PhysRevLett.123.045702.
Sharma, Surinder M., Turneaure, Stefan J., Winey, J. M., Li, Yuelin, Rigg, Paulo, Schuman, Adam, Sinclair, Nicholas, Toyoda, Y., Wang, Xiaoming, Weir, Nicholas, Zhang, Jun, and Gupta, Y. M. Wed . "Structural Transformation and Melting in Gold Shock Compressed to 355 GPa". United States. doi:10.1103/PhysRevLett.123.045702.
@article{osti_1545791,
title = {Structural Transformation and Melting in Gold Shock Compressed to 355 GPa},
author = {Sharma, Surinder M. and Turneaure, Stefan J. and Winey, J. M. and Li, Yuelin and Rigg, Paulo and Schuman, Adam and Sinclair, Nicholas and Toyoda, Y. and Wang, Xiaoming and Weir, Nicholas and Zhang, Jun and Gupta, Y. M.},
abstractNote = {Gold is believed to retain its ambient crystal structure to very high pressures under static and shock compression, enabling its wide use as a pressure marker. Our in situ x-ray diffraction measurements on shock-compressed gold show that it transforms to the body-centered-cubic (bcc) phase, with an onset pressure between 150-176 GPa. Liquid/bcc coexistence was observed between 220-302 GPa and complete melting occurs by 355 GPa. Furthermore, our observation of the lower coordination bcc structure in shocked gold is in marked contrast with theoretical predictions and the reported observation of the hexagonal-close-packed structure under static compression.},
doi = {10.1103/PhysRevLett.123.045702},
journal = {Physical Review Letters},
number = 4,
volume = 123,
place = {United States},
year = {2019},
month = {7}
}

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Works referenced in this record:

Two-dimensional detector software: From real detector to idealised image or two-theta scan
journal, January 1996

  • Hammersley, A. P.; Svensson, S. O.; Hanfland, M.
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