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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2602.13053 |
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| _version_ | 1866918336918454272 |
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| author | del Rosso, Leonardo Fortes, A. Dominic Colognesi, Daniele Santonocito, Alberto Grazzi, Francesco Berni, Selene Celli, Milva |
| author_facet | del Rosso, Leonardo Fortes, A. Dominic Colognesi, Daniele Santonocito, Alberto Grazzi, Francesco Berni, Selene Celli, Milva |
| contents | The fundamental properties of ice have always attracted a lot of interest due to omnipresence of ice in many different natural contexts. Since cubic ice recently become experimentally accessible from a low-density gas hydrate precursor [1, 2], it has been possible to measure its density as a function of temperature in the whole thermodynamic range of metastability. We found strong analogies with respect to the other ice I polytype, i.e., hexagonal ice Ih [3], including the presence of a negative thermal expansion behavior at low temperature. Based on these results, a new enthalpy calculation quantifies the metastable nature of the cubic form and, consequently its inaccessibility from a "normal" ice Ih precursor. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_13053 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Negative thermal expansion in ice I polytypes del Rosso, Leonardo Fortes, A. Dominic Colognesi, Daniele Santonocito, Alberto Grazzi, Francesco Berni, Selene Celli, Milva Materials Science Earth and Planetary Astrophysics Chemical Physics The fundamental properties of ice have always attracted a lot of interest due to omnipresence of ice in many different natural contexts. Since cubic ice recently become experimentally accessible from a low-density gas hydrate precursor [1, 2], it has been possible to measure its density as a function of temperature in the whole thermodynamic range of metastability. We found strong analogies with respect to the other ice I polytype, i.e., hexagonal ice Ih [3], including the presence of a negative thermal expansion behavior at low temperature. Based on these results, a new enthalpy calculation quantifies the metastable nature of the cubic form and, consequently its inaccessibility from a "normal" ice Ih precursor. |
| title | Negative thermal expansion in ice I polytypes |
| topic | Materials Science Earth and Planetary Astrophysics Chemical Physics |
| url | https://arxiv.org/abs/2602.13053 |