2010/10/21 by T. Matsuoka, Naohisa Hirao, Yasuo Ohishi +3 · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Advanced Chemical Physics Studies #High-pressure geophysics and materials #Rare-earth and actinide compounds
paper · doi:10.1080/08957959.2010.522447
openalex publication_date 2010/10/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
We present the first successful in situ simultaneous measurement of the electrical resistance and X-ray diffraction of FeH x (x∼ 1) under high-pressure H2 up to 25.5 GPa and low temperatures down to 9 K. The electrical resistivity ρ showed a sharp increase with the formation of iron-hydride FeH x (x∼ 1) at 3.5 GPa. The ϵ′-phase of FeH x was found to be metallic up to 25.5 GPa. The ρ vs. T curves up to 16.5 GPa approximately follow Fermi-liquid law below 25 K. However, T 5 was found to be better fitting at 25.5 GPa. This change can be considered to be related to the previously reported ferromagnetism collapse at corresponding pressure.