An in situ X ray diffraction study of the α-β transformation kinetics of Mg2SiO4

Tomoaki Kubo, Eiji Ohtani, Takumi Kato, Hideaki Morishima, Daisuke Yamazaki, Akio Suzuki, Kenji Mibe, Takumi Kikegawa, Osamu Shimomura

研究成果: ジャーナルへの寄稿記事

24 引用 (Scopus)

抜粋

This is the first report of the direct measurement of α-β transformation kinetics in Mg2SiO4, a major constituent in the Earth's mantle, through in situ X ray diffraction experiments at high pressure. The experiments were conducted using the sintered diamond cubic-anvil apparatus with synchrotron radiation (MAX 80). Although the present work is still preliminary, the kinetic data were analyzed using a nucleation and growth model. The growth rate of β-phase is determined to be 3.3 (1.6∼4.9) × 10-10 m/s at 13.0 GPa and 900°C, 7.1 (3.4∼10) × 10-10 m/s at 14.1 GPa and 885°C, and 1.5 (0.7∼2.3) × 10-9 m/s at 14.9 GPa and 875°C.

元の言語英語
ページ(範囲)695-698
ページ数4
ジャーナルGeophysical Research Letters
25
発行部数5
DOI
出版物ステータス出版済み - 3 1 1998

    フィンガープリント

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

これを引用

Kubo, T., Ohtani, E., Kato, T., Morishima, H., Yamazaki, D., Suzuki, A., ... Shimomura, O. (1998). An in situ X ray diffraction study of the α-β transformation kinetics of Mg2SiO4. Geophysical Research Letters, 25(5), 695-698. https://doi.org/10.1029/98GL00224