Electrical conductivity of enstatite up to 20 GPa and 1600K

Bao Hua Zhang, Xiao Ping Wu, Jun Shan Xu, Tomoo Katsura, Takashi Yoshino

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The electrical conductivity of ( Mg0.9 Fe0.1 ) SiO3 enstatite has been measured at pressures of 10 -20 GPa and temperatures of 750-1600 K using a Kawai-type multianvil high-pressure apparatus. The experimental results demonstrate that there are two conduction mechanisms, small polaron is the dominant mechanism in the high temperature regions, while proton is in charge of the low temperature regions as water is determined in the recovered sample in this study. On the other hand, we observe a pressure induced phase transition from enstatite to ringwoodite under pressure of 20 GPa by X-ray diffraction. The conductivity of ringwoodite with water at 20 GPa is in good agreement with the available measurements of hydrous ringwoodite.

Original languageEnglish
Pages (from-to)760-764
Number of pages5
JournalActa Geophysica Sinica
Volume53
Issue number3
DOIs
Publication statusPublished - Mar 2010

Keywords

  • Electrical conductivity
  • Enstatite
  • Proton
  • Small polaron

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

Fingerprint Dive into the research topics of 'Electrical conductivity of enstatite up to 20 GPa and 1600K'. Together they form a unique fingerprint.

Cite this