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Implementation of micro-ball nanodiamond anvils for high-pressure studies above 6 Mbar

Author

Listed:
  • Leonid Dubrovinsky

    (Bayerisches Geoinstitut, Universität Bayreuth)

  • Natalia Dubrovinskaia

    (Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth)

  • Vitali B Prakapenka

    (Center for Advanced Radiation Sources, University of Chicago)

  • Artem M Abakumov

    (EMAT, University of Antwerp)

Abstract

Since invention of the diamond anvil cell technique in the late 1950s for studying materials at extreme conditions, the maximum static pressure generated so far at room temperature was reported to be about 400 GPa. Here we show that use of micro-semi-balls made of nanodiamond as second-stage anvils in conventional diamond anvil cells drastically extends the achievable pressure range in static compression experiments to above 600 GPa. Micro-anvils (10–50 μm in diameter) of superhard nanodiamond (with a grain size below ∼50 nm) were synthesized in a large volume press using a newly developed technique. In our pilot experiments on rhenium and gold we have studied the equation of state of rhenium at pressures up to 640 GPa and demonstrated the feasibility and crucial necessity of the in situ ultra high-pressure measurements for accurate determination of material properties at extreme conditions.

Suggested Citation

  • Leonid Dubrovinsky & Natalia Dubrovinskaia & Vitali B Prakapenka & Artem M Abakumov, 2012. "Implementation of micro-ball nanodiamond anvils for high-pressure studies above 6 Mbar," Nature Communications, Nature, vol. 3(1), pages 1-7, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms2160
    DOI: 10.1038/ncomms2160
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