Structural, vibrational, and electronic properties of BaReH9 under pressure

Eugene A. Vinitsky, Takaki Muramatsu, Maddury Somayazulu, Wilson K. Wanene, Zhenxian Liu, Dhanesh Chandra, Russell J. Hemley

Research output: Contribution to journalArticlepeer-review


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 languageEnglish (US)
Article number505701
JournalJournal of Physics Condensed Matter
Issue number50
StatePublished - Oct 28 2016


  • hydride superconductors
  • hydrogen-rich compounds
  • pressure-induced disorder

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics


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