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Title: Detonation-induced transformation of graphite to hexagonal diamond

Journal Article · · Physical Review B
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  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics
  3. Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics; Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

In this work, we explore the structural evolution of highly oriented pyrolytic graphite (HOPG) under detonation-induced shock conditions using in situ synchrotron x-ray diffraction in the ns timescale. We observe the formation of hexagonal diamond (lonsdaleite) at pressures above 50 GPa, in qualitative agreement with recent gas gun experiments. First-principles density functional calculations reveal that under uniaxial compression, the energy barrier for the transition toward hexagonal diamond is lower than that for cubic diamond. Finally, no indication of cubic diamond formation was observed up to >70 GPa.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Washington State Univ., Pullman, WA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC02-06CH11357; AC52-07NA27344; 18-SI-004; NA0002442; AC0206CH11357; NA0003957
OSTI ID:
1756096
Alternate ID(s):
OSTI ID: 1669243; OSTI ID: 1680030
Report Number(s):
LLNL-JRNL-812742; 162668; TRN: US2206001
Journal Information:
Physical Review B, Vol. 102, Issue 10; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (43)

Novel Phase Transformation in ZnO Nanowires under Tensile Loading journal September 2006
Generalized Gradient Approximation Made Simple journal October 1996
Direct Conversion of Graphite to Diamond in Static Pressure Apparatus journal September 1962
Four superhard carbon allotropes: a first-principles study journal January 2012
Measurement of carbon condensates using small-angle x-ray scattering during detonation of the high explosive hexanitrostilbene journal June 2015
A new family of sp 3 -hybridized carbon phases journal January 2016
Communication: From graphite to diamond: Reaction pathways of the phase transition journal September 2012
Projector augmented-wave method journal December 1994
�ber die Kristallstruktur des Graphits journal December 1924
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Superhard Monoclinic Polymorph of Carbon journal April 2009
Denser than diamond: Ab initio search for superdense carbon allotropes journal May 2011
Mechanochemical formation of heterogeneous diamond structures during rapid uniaxial compression in graphite journal May 2018
Detonation synthesis of carbon nano-onions via liquid carbon condensation journal August 2019
Nanosecond formation of diamond and lonsdaleite by shock compression of graphite journal March 2016
Time resolved small angle X-ray scattering experiments performed on detonating explosives at the advanced photon source: Calculation of the time and distance between the detonation front and the x-ray beam journal March 2017
Bonding Changes in Compressed Superhard Graphite journal October 2003
Hexagonal Diamond—A New Form of Carbon journal May 1967
Instabilities in cubic diamond under non-hydrostatic compressive stress journal July 2008
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Resolving Detonation Nanodiamond Size Evolution and Morphology at Sub-Microsecond Timescales during High-Explosive Detonations journal July 2019
Hexagonal Diamonds in Meteorites: Implications journal February 1967
Role of graphite crystal structure on the shock-induced formation of cubic and hexagonal diamond journal June 2020
An ab initio study on the transition paths from graphite to diamond under pressure journal March 2013
Dynamic experiment using IMPULSE at the Advanced Photon Source journal May 2014
Crystal structure of graphite under room-temperature compression and decompression journal July 2012
Carbon nitride frameworks and dense crystalline polymorphs journal September 2016
Shock‐induced martensitic transformation of highly oriented graphite to diamond journal May 1992
Nanocrystalline hexagonal diamond formed from glassy carbon journal November 2016
Semiempirical GGA-type density functional constructed with a long-range dispersion correction journal January 2006
Lattice Constant of Diamond and the C–C Single Bond journal May 1944
A generalized crystal-cutting method for modeling arbitrarily oriented crystals in 3D periodic simulation cells with applications to crystal–crystal interfaces journal October 2016
DIOPTAS : a program for reduction of two-dimensional X-ray diffraction data and data exploration journal May 2015
Graphite to Diamond: Origin for Kinetics Selectivity journal February 2017
Finite strain isotherm and velocities for single-crystal and polycrystalline NaCl at high pressures and 300°K journal January 1978
Transformation of shock-compressed graphite to hexagonal diamond in nanoseconds journal October 2017
POWDER CELL – a program for the representation and manipulation of crystal structures and calculation of the resulting X-ray powder patterns journal June 1996
Real-time, high-resolution x-ray diffraction measurements on shocked crystals at a synchrotron facility journal December 2012
X-ray imaging and 3D reconstruction of in-flight exploding foil initiator flyers journal June 2016
Powder pattern indexing with the dichotomy method journal September 2004
Nucleation mechanism for the direct graphite-to-diamond phase transition journal July 2011
A generalized solid-state nudged elastic band method journal February 2012
Evolution of Carbon Clusters in the Detonation Products of the Triaminotrinitrobenzene (TATB)-Based Explosive PBX 9502 journal October 2017