A micro-Raman investigation of high-pressure quenched graphite

Academic Article

Abstract

  • Polycrystalline pyrolytic graphite was compressed in a diamond anvil cell to pressures up to 73 GPa. In situ Raman measurements reveal evidence of a phase transition at 15-20 GPa, consistent with earlier static high-pressure experiments on graphite. The sample was quenched by rapid downloading of the cell to ambient pressure. Micro-Raman investigation of the quenched sample reveals a broad range of previously unobserved intermediate carbon structures, sometimes coexisting with diamond. We also observe the quenching of the 'nanocrystalline' phase of graphite.
  • Published In

    Digital Object Identifier (doi)

    Author List

  • Schindler TL; Vohra YK
  • Volume

  • 7
  • Issue

  • 47