Abstract
The high-pressure-induced phase transitions of mercury chalcogenides (including sulfide, selenide, and telluride) were studied to 40 GPa using energy-dispersive x-ray diffraction with a diamond anvil cell. The common pressure-induced transition sequence in these compounds was found to be zinc blende (phase I), cinnabar (phase II), NaCl (phase III), and body-centered tetragonal (phase IV). Relative intensity measurements were compared to relative intensity calculations to determine the space groups of phases III and IV. Another high-pressure phase (phase V) of HgTe was found. The high-pressure phase-transition sequence of mercury chalcogenides is similar to that for the zinc and cadmium chalcogenides except for the intermediate cinnabar phase in the mercury chalcogenides.
- Received 27 July 1984
DOI:https://doi.org/10.1103/PhysRevB.31.5976
©1985 American Physical Society