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High Pressure Research: An International Journal

Volume 31, Issue 3, 2011

 In situ observation of pressure-induced electrical resistance changes in zirconium: pressure calibration points for the large volume press at 8 and 35 GPa

In situ observation of pressure-induced electrical resistance changes in zirconium: pressure calibration points for the large volume press at 8 and 35 GPa

DOI:
10.1080/08957959.2011.596837
Yoshinori Tangea*, Eiichi Takahashib & Ken-ichi Funakoshic

pages 413-418

Available online: 31 Aug 2011

Abstract

Simultaneous in situ pressure–resistance measurements were carried out up to 40 GPa using a multianvil apparatus with synchrotron-based X-ray diffraction (XRD) measurements. Pressure-induced electrical resistance changes in zirconium were measured at ambient temperatures and two discontinuities were observed around the α–ω and ω–β structural phase transitions. The transition pressures were strictly determined from simultaneous measurements of the electrical resistance and in situ XRD as 7.96±0.16 and 34.5±0.3 GPa, respectively, using an equation of state for gold as the pressure scale. The precisely determined transition pressures are available for room temperature pressure calibration points for large volume presses installed at offline laboratories.

Keywords

 

Details

  • Available online: 31 Aug 2011

Author affiliations

  • a Geodynamics Research Center, Ehime University, Matsuyama, Ehime, Japan
  • b Tokyo Institute of Technology, Meguro, Tokyo, Japan
  • c Japan Synchrotron Radiation Research Institute, Sayo-cho, Sayo-gun, Hyogo, Japan

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