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Thermal expansion of MgSiO 3 perovskite at 20.5 GPa
Author(s) -
Morishima Hideaki,
Ohtani Eiji,
Kato Takumi,
Shimomura Osamu,
Kikegawa Takumi
Publication year - 1994
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/94gl00844
Subject(s) - thermal expansion , perovskite (structure) , synchrotron radiation , materials science , diamond anvil cell , synchrotron , diffraction , x ray crystallography , thermal , mineralogy , high pressure , analytical chemistry (journal) , thermodynamics , geology , crystallography , chemistry , composite material , optics , physics , chromatography
A high pressure and high temperature in‐situ X‐ray diffraction experiment of MgSiO 3 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.