Ultrafast visualization of crystallization and grain growth in shock-compressed SiO2

Nature Communications
A E GleasonW L Mao

Abstract

Pressure- and temperature-induced phase transitions have been studied for more than a century but very little is known about the non-equilibrium processes by which the atoms rearrange. Shock compression generates a nearly instantaneous propagating high-pressure/temperature condition while in situ X-ray diffraction (XRD) probes the time-dependent atomic arrangement. Here we present in situ pump-probe XRD measurements on shock-compressed fused silica, revealing an amorphous to crystalline high-pressure stishovite phase transition. Using the size broadening of the diffraction peaks, the growth of nanocrystalline stishovite grains is resolved on the nanosecond timescale just after shock compression. At applied pressures above 18 GPa the nuclueation of stishovite appears to be kinetically limited to 1.4±0.4 ns. The functional form of this grain growth suggests homogeneous nucleation and attachment as the growth mechanism. These are the first observations of crystalline grain growth in the shock front between low- and high-pressure states via XRD.

References

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Citations

Oct 24, 2017·Reports on Progress in Physics·E A SeddonW Wurth
Nov 15, 2017·Nature Communications·A E GleasonW L Mao
Aug 6, 2016·Science Advances·Toshimori SekineRyosuke Kodama
May 26, 2017·Proceedings of the National Academy of Sciences of the United States of America·Margherita CitroniRoberto Bini
Dec 18, 2019·Proceedings of the National Academy of Sciences of the United States of America·Yanhao LinHo-Kwang Mao
Jul 29, 2017·Physical Review Letters·A E GleasonW L Mao
Jun 9, 2018·Physical Review Letters·Mu LiRaymond Jeanloz
May 17, 2017·Science Advances·Masaaki MisawaFumihiro Wakai
Apr 26, 2018·Physical Review Letters·Sally June TracyThomas S Duffy
May 10, 2019·Nature·Marius MillotJon H Eggert
May 18, 2020·Proceedings of the National Academy of Sciences of the United States of America·Guillaume MorardAlessandra Ravasio
Mar 16, 2019·Science Advances·S Brennan BrownB Nagler
Jan 31, 2021·The Review of Scientific Instruments·A DenoeudE Brambrink
Jul 16, 2021·Nature Communications·Takuo OkuchiNorimasa Ozaki
Mar 17, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·M I McMahon
Jul 4, 2018··Dana M. Dattelbaum, Dana M. Dattelbaum

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Methods Mentioned

BETA
X-ray

Software Mentioned

VISAR

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