Shock-induced phase transition in diamond

You Lin*, Romain Perriot, Vasily V. Zhakhovsky, Xiang Gu, Carter T. White, Ivan I. Oleynik

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

5 Citations (Scopus)

Abstract

Shock wave propagation in diamond along the [110] crystallographic direction was simulated by molecular dynamics (MD) using the reactive empirical bond order (REBO) potential. A new regime of shock wave propagation was observed involving split elastic-elastic shock waves for the range of piston velocities between 2.0 and 4.1 km/s, and longitudinal stresses 126-278 GPa. The two-wave elastic-elastic splitting is caused by a stress-induced structural phase transition from a standard, low-pressure, to a high-pressure phase of REBO diamond, which takes place in the interval of pressures below the Hugoniot elastic limit. The observed phase coexistence in the second elastic shock wave is associated with a non-monotonic longitudinal stress-strain relationship upon uniaxial compression along [110] crystallographic direction.

Original languageEnglish
Title of host publicationShock Compression of Condensed Matter - 2011 - Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
Pages1171-1174
Number of pages4
Volume1426
DOIs
Publication statusPublished - 2012
MoE publication typeA4 Article in a conference publication
EventBiennial Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter - Chicago, United States
Duration: 26 Jun 20111 Jul 2011
Conference number: 17

Publication series

NameAIP Conference Proceedings
Volume1426
ISSN (Print)0094-243X

Conference

ConferenceBiennial Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
Abbreviated titleAPS SCCM
CountryUnited States
CityChicago
Period26/06/201101/07/2011

Keywords

  • Diamond
  • Molecular Dynamics
  • Reactive Bond Order Potential
  • Shock waves

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