Abstract
We report the diamond anvil cell (DAC) high pressure powder X-ray diffraction studies on amorphous selenium (a-Se) under truly hydrostatic pressure condition up to 20 GPa. Amorphous selenium exhibits a sharp and irreversible transition to a hexagonal structure at 10.6 ± 0.1 GPa. It is also known that metallization occurs in a-Se around this pressure. Some plausible arguments are provided to suggest that the amorphous to crystalline transition may be driven by metallization.
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Chandra Shekar, N.V., Yousuf, M., Sahu, P.C. et al. High pressure investigations on amorphous selenium. Pramana - J. Phys 40, 367–376 (1993). https://doi.org/10.1007/BF02847497
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DOI: https://doi.org/10.1007/BF02847497