In:
The Journal of Chemical Physics, AIP Publishing, Vol. 141, No. 10 ( 2014-09-14)
Abstract:
High-pressure H2O polymorphs among which ice VI and ice VII are abundant in the interiors of large icy satellites and exo-planets. Knowledge of the elastic properties of these pure H2O ices at high-temperature and high-pressure is thus crucial to decipher the internal structure of icy bodies. In this study we assess for the first time the pressure-volume-temperature (PVT) relations of both polycrystalline pure ice VI and ice VII at high pressures and temperatures from 1 to 9 GPa and 300 to 450 K, respectively, by using in situ synchrotron X-ray diffraction. The PVT data are adjusted to a second-order Birch-Murnaghan equation of state and give V0 = 14.17(2) cm3 mol−1, K0 = 14.05(23) GPa, and α0 = 14.6(14) × 10−5 K−1 for ice VI and V0 = 12.49(1) cm3 mol−1, K0 = 20.15(16) GPa, and α0 = 11.6(5) × 10−5 K−1 for ice VII.
Type of Medium:
Online Resource
ISSN:
0021-9606
,
1089-7690
Language:
English
Publisher:
AIP Publishing
Publication Date:
2014
detail.hit.zdb_id:
3113-6
detail.hit.zdb_id:
1473050-9
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