Abstract
We present a study of the high-pressure behavior of BaReH9, a novel hydrogen-rich compound, using optical, Raman, and infrared spectroscopy as well as synchrotron x-ray diffraction. The x-ray diffraction measurements demonstrate that BaReH9 retains its hexagonal structure on room temperature compression up to 40 GPa. Optical absorption shows the absence of a gap closure to 80 GPa. Raman and IR spectra reveal the pressure evolution of a newly observed phonon peak, and large peak broadening with increasing pressure. These data constrain the disorder present in the material following the P-T paths explored.
Original language | English (US) |
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Article number | 505701 |
Journal | Journal of Physics Condensed Matter |
Volume | 28 |
Issue number | 50 |
DOIs | |
State | Published - Oct 28 2016 |
Keywords
- hydride superconductors
- hydrogen-rich compounds
- pressure-induced disorder
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics