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Chinese Journal of High Pressure Physics  > 2009  >  23(3): 209-214 .
LIU Lei, LI Xiao-Dong, LI Yan-Chun, TANG Ling-Yun, LIU Jing, BI Yan. The High Pressure Structure and Isothermal Equation of State of NiO up to 67 GPa[J]. Chinese Journal of High Pressure Physics, 2009, 23(3): 209-214 . doi: 10.11858/gywlxb.2009.03.008
Citation: LIU Lei, LI Xiao-Dong, LI Yan-Chun, TANG Ling-Yun, LIU Jing, BI Yan. The High Pressure Structure and Isothermal Equation of State of NiO up to 67 GPa[J]. Chinese Journal of High Pressure Physics, 2009, 23(3): 209-214 . doi: 10.11858/gywlxb.2009.03.008
shu

The High Pressure Structure and Isothermal Equation of State of NiO up to 67 GPa

doi: 10.11858/gywlxb.2009.03.008
  • 1.

    Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;

  • 2.

    National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China

More Information
  • Corresponding author: LIU Jing
  • Received Date: 18 Mar 2008
  • Rev Recd Date: 05 May 2008
  • Publish Date: 15 Jun 2009
    Abstract
  • The high-pressure structure and isothermal equation of state of NiO were investigated up to 67 GPa by in situ synchrotron X-ray diffraction in a diamond anvil cell using argon as the pressure medium. No phase transition was found in this pressure range, nor the the pressure coefficient of axial ratio c/a became larger suddenly at about 60 GPa which was predicted by T.Sasaki. Our experiments showed that the distortion of the structure under pressure was slacker than previous results. We fit the data points to the three-order Brich-Murnaghan EOS, which resulted in a bulk modulus of B0=195(4) GPa with its pressure derivative B0=5.3(2).

     

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