Thermal expansion of MgSiO3 perovskite at 20.5 GPa

Hideaki Morishima, Eiji Ohtani, Takumi Kato, Osamu Shimomura, Takumi Kikegawa

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


A high pressure and high temperature in‐situ X‐ray diffraction experiment of MgSiO3 perovskite was conducted using a sintered diamond multianvil apparatus (SDMA8) combined with the synchrotron radiation. The unit cell parameters of the perovskite were measured up to 1095°C at about 20.5 GPa. The thermal expansion coefficient is 0.8(±0.8)×10−5 K−1 at 20.5 GPa and room temperature.

Original languageEnglish
Pages (from-to)899-902
Number of pages4
JournalGeophysical Research Letters
Issue number10
Publication statusPublished - May 15 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • General Earth and Planetary Sciences


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