R3: High-pressure science and deep Earth's material

[R3P-10] Sound velocity and Mossbauer spectroscopy measurements of FeH₂

*Daijo Ikuta¹, Eiji Ohtani¹, Naohisa Hirao², Takaya Mitsui³, Satoshi Nakano⁴, Hiroshi Uchiyama², Satoshi Tsutsui², Alfred Q. R. Baron⁵ (1. Dept. Earth Sci., Tohoku Univ., 2. JASRI, 3. QST, 4. NIMS, 5. RIKEN)

Keywords:FeH2, Sound velocity, Mossbauer spectroscopy, High pressure

The physical properties of these high-pressure phases of Fe-H are important as the constituent of the Earth’s core and giant planets that are composed mainly of hydrogen. However, the physical properties of these high-pressure phases of Fe-H compounds have not been measured yet. In this study, we report the sound velocity and magnetic property of FeH₂ that measured by inelastic x-ray scattering and Mossbauer spectroscopy, respectively.