In situ observations of a high-pressure phase of H2O ice
Science
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Abstract
A previously unknown solid phase of H2O has been identified by its peculiar growth patterns, distinct pressure-temperature melting relations, and vibrational Raman spectra. Morphologies of ice crystals and their pressure-temperature melting relations were directly observed in a hydrothermal diamond-anvil cell for H2O bulk densities between 1203 and 1257 kilograms per cubic meter at temperatures between -10??and 50??C. Under these conditions, four different ice forms were observed to melt: two stable phases, ice V and ice VI, and two metastable phases, ice IV and the new ice phase. The Raman spectra and crystal morphology are consistent with a disordered anisotropic structure with some similarities to ice VI.
Suggested Citation
Chou, I., Blank, J., Goncharov, A., Mao, H., Hemley, R., 1998, In situ observations of a high-pressure phase of H2O ice: Science, v. 281, no. 5378, p. 809-812, https://doi.org/10.1126/science.281.5378.809.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | In situ observations of a high-pressure phase of H2O ice |
| Series title | Science |
| DOI | 10.1126/science.281.5378.809 |
| Volume | 281 |
| Issue | 5378 |
| Year Published | 1998 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Science |
| First page | 809 |
| Last page | 812 |