- 责任者：Zhang Baohua (School of Earth and Space Science ; University of Science and Technology of China ; Hefei 230026 ; China) ; Wu Xiaoping
- 刊名：Chinese Journal of Geophysics
- 出版年：2010
- 卷期：53(3)
- 关键词：顽辉石 ; enstatite
- 页码：p.760-764
- 图表：3 illus., 1 table, 20 refs.
- 分类号：0700
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
hang>The electrical conductivity of (Mg0.9Fe0.1) 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.hemas-microsoft-com:office:office" />