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Phase study of solid HBr by Raman spectroscopy

Authors
Journal
Physica B Condensed Matter
0921-4526
Publisher
Elsevier
Publication Date
Volume
265
Identifiers
DOI: 10.1016/s0921-4526(98)01332-5
Keywords
  • Molecular Solid
  • Phase Diagram
  • Raman Spectroscopy
  • Hydrogen Bond

Abstract

Abstract By means of Raman spectroscopy, the pressure–temperature ( P– T) phase diagram of solid hydrogen bromide (HBr) was determined over a wide region up to 15 GPa in pressure and down to 20 K in temperature. The change in Raman spectra corresponding to the phase transitions was clearly observed, which allowed us to determine the stability regions of the cubic phases (I and I′) and the orthorhombic phases (II and III). The triple point of phases I′, II, and III exists around P=7.5 GPa and T=230 K.

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