[S-MP36] Physics and Chemistry of Minerals

[SMP36-10] GHz ultrasonic velocity measurements of iron beyond the bcc-hcp transition

*Akira Yoneda¹, Ryo Tsuruoka², Seiji Kamada³, Hidenori Terasaki² (1.Institute for Planetary Materials, Okayama University, 2.Graduate school of Science, Osaka Univ., 3.Frontier Research Institute for Interdisciplinary Sciences, Tohoku Univ.)

Keywords:CHz ultrasonic measurement, iron, high pressure

We have been developing GHz ultrasonic measurement in DAC up to ~15 GP both for P and S waves. This project of measuring iron was started after the achievements of preliminary work on KCl and natural olivine up to ~15 GPa (Yoneda et al., JpGU2019). We would like to present (1) additional technical improvements recently, and (2) preliminary experimental results at around 1GPa.