Structural, vibrational, and electronic properties of BaReH 9 under pressure

We present a study of the high-pressure behavior of BaReH , 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 BaReH retains its hexagonal structure on room temperature compress...

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Published in:Journal of physics. Condensed matter 2016-12, Vol.28 (50), p.505701
Main Authors: Vinitsky, Eugene A, Muramatsu, Takaki, Somayazulu, Maddury, Wanene, Wilson K, Liu, Zhenxian, Chandra, Dhanesh, Hemley, Russell J
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cited_by cdi_FETCH-LOGICAL-c1508-93493da7b1d1d169a045ba8c9def17f4bdc57212f5f782f7aab84a22910255003
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description We present a study of the high-pressure behavior of BaReH , 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 BaReH 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.
doi_str_mv 10.1088/0953-8984/28/50/505701
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title Structural, vibrational, and electronic properties of BaReH 9 under pressure
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