Visual Observations of the Amorphous-Amorphous Transition in H 2 O Under Pressure
- 18 October 1991
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 254 (5030) , 406-408
- https://doi.org/10.1126/science.254.5030.406
Abstract
The vapor-deposited low-density amorphous phase of H2O was directly compressed at 77 kelvin with a diamond-anvil cell, and the boundary between the low-density amorphous phase and the high-density amorphous phase was observed while the sample was warmed under compression. The transition from the low-density amorphous phase to the high-density amorphous phase was distinct and reversible in an apparently narrow pressure range at ∼130 to ∼150 kelvin, which provided experimental evidence for polymorphism in amorphous H2O.Keywords
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