Cubic boron nitride as a primary calibrant for a high temperature pressure scale

Alexander F. Goncharov, Stanislav Sinogeikin, Jonathan C. Crowhurst, Muhtar Ahart, Dmitry Lakshtanov, Vitali Prakapenka, Jay Bass, Pierre Beck, Sergei N. Tkachev, Joseph M. Zaug, Yingwei Fei

Research output: Contribution to journalArticlepeer-review


We present results establishing a new high pressure scale at high temperature based on the thermal equation of state and elastic properties of cubic boron nitride (cBN). This scale is derived from simultaneous measurements of density and sound velocities at high pressure and temperature independent of any previous pressure scale. The present results obtained at room temperature to 27GPa suggest the validity of the current ruby scale (within4% at 100GPa). At high temperature, data obtained at 16GPa to 723K are in fair agreement with the thermal equation of state of cBN reported in our previous work. We have also shown that cBN can serve as a convenient pressure gauge in X-ray and optical studies using the laser heated diamond anvil cell.

Original languageEnglish (US)
Pages (from-to)409-417
Number of pages9
JournalHigh Pressure Research
Issue number4
StatePublished - Dec 2007


  • Brillouin spectroscopy
  • Cubic BN
  • Equation of state
  • High-pressure scale

ASJC Scopus subject areas

  • Condensed Matter Physics


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