Sound velocity of iron-light element compounds and the chemical structure of the inner core

Eiji Ohtani1, Tatsuya Sakamaki2, Hiroshi Fukui3, Ryosuke Tanaka1, Yuki Shibazaki4, Seiji Kamada1, Takanori Sakairi1, Suguru Takahashi1, Satoshi Tsutsui5 and Alfred Q. R. Baron6, (1)Tohoku University, Sendai, Japan, (2)Tohoku University, Department of Earth Science, Sendai, Japan, (3)University of Hyogo, Kobe, Japan, (4)Tohoku University, Frontier Research Institute for Interdisciplinary Sciences, Sendai, Japan, (5)Japan Synchrotron Radiation Research Institute, Hyogo, Japan, (6)RIKEN SPring-8 Center, Material Dynamics Laboratory, Hyogo, Japan