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Single crystal toroidal diamond anvils for high pressure experiments beyond 5 megabar

Author

Listed:
  • Zs. Jenei

    (Lawrence Livermore National Laboratory)

  • E. F. O’Bannon

    (Lawrence Livermore National Laboratory)

  • S. T. Weir

    (Lawrence Livermore National Laboratory)

  • H. Cynn

    (Lawrence Livermore National Laboratory)

  • M. J. Lipp

    (Lawrence Livermore National Laboratory)

  • W. J. Evans

    (Lawrence Livermore National Laboratory)

Abstract

Static compression experiments over 4 Mbar are rare, yet critical for developing accurate fundamental physics and chemistry models, relevant to a range of topics including modeling planetary interiors. Here we show that focused ion beam crafted toroidal single-crystal diamond anvils with ~9.0 μm culets are capable of producing pressures over 5 Mbar. The toroidal surface prevents gasket outflow and provides a means to stabilize the central culet. We have reached a maximum pressure of ~6.15 Mbar using Re as in situ pressure marker, a pressure regime typically accessed only by double-stage diamond anvils and dynamic compression platforms. Optimizing single-crystal diamond anvil design is key for extending the pressure range over which studies can be performed in the diamond anvil cell.

Suggested Citation

  • Zs. Jenei & E. F. O’Bannon & S. T. Weir & H. Cynn & M. J. Lipp & W. J. Evans, 2018. "Single crystal toroidal diamond anvils for high pressure experiments beyond 5 megabar," Nature Communications, Nature, vol. 9(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06071-x
    DOI: 10.1038/s41467-018-06071-x
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    Cited by:

    1. Valery I. Levitas & Achyut Dhar & K. K. Pandey, 2023. "Tensorial stress-plastic strain fields in α - ω Zr mixture, transformation kinetics, and friction in diamond-anvil cell," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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