Shock Compression of NiO to 130GPa.

  • Noguchi Y.
    Institute for Materials Research, Tohoku University
  • Uchino M.
    High Energy Rate Laboratory, Kumamoto University
  • Hikosaka H.
    Institute for Materials Research, Tohoku University
  • Kusaba K.
    Institute for Materials Research, Tohoku University
  • Fukuoka K.
    Institute for Materials Research, Tohoku University
  • Mashimo T.
    High Energy Rate Laboratory, Kumamoto University
  • Syono Y.
    Institute for Materials Research, Tohoku University

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Shock compression experiments on single crystal NiO grown by the Verneuil method have been carried out up to 132GPa using both propellant and two-stage light-gas guns. The shock states, recorded with the inclined mirror method, were analyzed by the free-suncce approximation and impedance-match solution. No discontinuous volume decrease was observed along the Hugoniot, indicating that NiO remains with the rocksalt structure to 132GPa. The isothermal compression curve, reduced from the Hugoniot, yields a bulk modulus of K = 184±5GPa assuming K'=4, which is consistent with the results of recent hydrostatic compression experiments and theoretical calculations.

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