17:45 〜 18:00
[SIT03-P02_PG] ケイ酸塩ペロブスカイトの単結晶弾性
ポスター講演3分口頭発表枠
キーワード: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.