Japan Geoscience Union Meeting 2014

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International Session (Oral)

Symbol S (Solid Earth Sciences) » S-IT Science of the Earth's Interior & Techtonophysics

[S-IT03_29PM2] Structure and dynamics of Earth and Planetary deep interiors

Tue. Apr 29, 2014 4:15 PM - 6:00 PM 418 (4F)

Convener:*Satoru Tanaka(Institute for Research on Earth Evolution Japan Agency for Marine-Earth Science and Technology), Takashi Yoshino(Institute for Study of the Earth's Interior, Okayama University), Masanori Kameyama(Geodynamics Research Center, Ehime University), Dapeng Zhao(Department of Geophysics, Tohoku University), John Hernlund(ELSI, Tokyo TECH), Chair:John Hernlund(Earth-Life Science Institute, Tokyo Institute of Technology), Kenji Ohta(Department of Earth and Planetary Sciences, Tokyo Institute of Technology)

5:45 PM - 6:00 PM

[SIT03-P02_PG] Single-crystal elastic property of silicate perovskites

3-min talk in an oral session

*Hiroshi FUKUI1, Akira YONEDA2, Anton SHATSKIY3, Satoshi TSUTSUI4, Alfred BARON5 (1.Graduate School of Material Science, University of Hyogo, 2.Institute for the Earth's Interior, Okayama University, 3.V.S. Sobolev Institute of Geology and Mineralogy, Russian Academy of Science, Siberian Branch, 4.Research and Utilization Division, SPring-8/JASRI, 5.Materials Dynamics Laboratory, RIKEN SPring-8 Center, RIKEN)

Keywords:silicate perovskite, single-crystal elasticity, the lower mantle, inelastic x-ray scattering

Information of single-crystal elasticity of silicate perovskite is essential for comprehensive understanding of the lower mantle. We have measured single-crystal elastic property of Mg1-xFexSiO3 perovskite (x = 0 or 0.035) by means of inelastic x-ray scattering at the ambient condition. The present results show relatively low values compared to previous reports for the iron free sample. The effect of iron increases both adiabatic bulk modulus and shear modulus. Combining the present results with pressure and temperature derivatives reported in literature, the chemical composition of the lower mantle will be discussed.