In situ X ray observation of high-pressure phase transitions of MgSiO3 and thermal expansion of MgSiO3 perovskite at 25 GPa by double-stage multianvil system

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

Research output: Contribution to journalArticle

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Abstract

A double-stage multianvil system was developed to conduct in situ X ray diffraction study at high pressures. The system has been used in conjunction with intense synchrotron radiation to study the phase transitions of MgSiO3 and the thermal expansion of MgSiO3 perovskite. At pressures between 20 and 30 GPa, a series of phase transitions from spinel+stishovite through ilmenite to perovskite were observed. The results provide the phase stability relation of MgSiO3 and the thermal equation of state of MgSiO3 perovskite at pressures corresponding to the boundary between the upper and lower mantle. -from Authors

Original languageEnglish
Pages (from-to)20,475-20,481
JournalJournal of Geophysical Research
Volume100
Issue numberB10
Publication statusPublished - Jan 1 1995

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thermal expansion
perovskite
phase transition
Perovskite
Thermal expansion
X-radiation
Phase transitions
stishovite
X rays
expansion
ilmenite
spinel
Ilmenite
synchrotron radiation
Earth mantle
x rays
equations of state
Phase stability
lower mantle
Synchrotron radiation

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

Kato, T., Ohtani, E., Morishima, H., Yamazaki, D., Suzuki, A., Suto, M., ... Shimomura, O. (1995). In situ X ray observation of high-pressure phase transitions of MgSiO3 and thermal expansion of MgSiO3 perovskite at 25 GPa by double-stage multianvil system. Journal of Geophysical Research, 100(B10), 20,475-20,481.

In situ X ray observation of high-pressure phase transitions of MgSiO3 and thermal expansion of MgSiO3 perovskite at 25 GPa by double-stage multianvil system. / Kato, Takumi; Ohtani, Eiji; Morishima, Hideaki; Yamazaki, Daisuke; Suzuki, Akio; Suto, Minoru; Kubo, Tomoaki; Kikegawa, Takumi; Shimomura, Osamu.

In: Journal of Geophysical Research, Vol. 100, No. B10, 01.01.1995, p. 20,475-20,481.

Research output: Contribution to journalArticle

Kato, T, Ohtani, E, Morishima, H, Yamazaki, D, Suzuki, A, Suto, M, Kubo, T, Kikegawa, T & Shimomura, O 1995, 'In situ X ray observation of high-pressure phase transitions of MgSiO3 and thermal expansion of MgSiO3 perovskite at 25 GPa by double-stage multianvil system', Journal of Geophysical Research, vol. 100, no. B10, pp. 20,475-20,481.
Kato, Takumi ; Ohtani, Eiji ; Morishima, Hideaki ; Yamazaki, Daisuke ; Suzuki, Akio ; Suto, Minoru ; Kubo, Tomoaki ; Kikegawa, Takumi ; Shimomura, Osamu. / In situ X ray observation of high-pressure phase transitions of MgSiO3 and thermal expansion of MgSiO3 perovskite at 25 GPa by double-stage multianvil system. In: Journal of Geophysical Research. 1995 ; Vol. 100, No. B10. pp. 20,475-20,481.
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AU - Yamazaki, Daisuke

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AU - Suto, Minoru

AU - Kubo, Tomoaki

AU - Kikegawa, Takumi

AU - Shimomura, Osamu

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