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

doi:10.1029/95jb01688

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

Material Science of Solar Planets

Research output: Contribution to journal › Article

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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 language	English
Pages (from-to)	20,475-20,481
Journal	Journal of Geophysical Research
Volume	100
Issue number	B10
DOIs	https://doi.org/10.1029/95jb01688
Publication status	Published - Jan 1 1995

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

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10.1029/95jb01688

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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, 100(B10), 20,475-20,481. https://doi.org/10.1029/95jb01688

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 journal › Article

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. https://doi.org/10.1029/95jb01688

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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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",

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