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 Otani, Hideaki Morishima, Daisuke Yamazaki, Akio Suzuki, Minoru Suto, Tomoaki Kubo, Takumi Kikegawa, Osamu Shimomura

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)

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
DOIs
Publication statusPublished - 1995

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Fingerprint

Dive into the research topics of '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'. Together they form a unique fingerprint.

Cite this