Pressures in the hydrospheres of large ocean worlds extend to ranges exceeding those in
Earth deepest oceans. In this regime, dense water ices and other high-pressure phases …

Water in Earth's deep interior is predicted to be hydroxyl (OH−) stored in nominally
anhydrous minerals, profoundly modulating both structure and dynamics of Earth's mantle …

Water's phase diagram displays enormous complexity with currently 17 experimentally
confirmed polymorphs of ice and several more predicted computationally. For almost 120 …

Hydrogen bond symmetrisation is the phenomenon where a hydrogen atom is located at the
centre of a hydrogen bond. Theoretical studies predict that hydrogen bonds in ice VII …

The current epoch can be described as the 'age of ice-rush', as the rate of discovery of ice
polymorphs, of which there are currently 20 known, has accelerated, particularly since the …

All the different phases of water ice between 2 GPa and several megabars are based on a
single body-centered cubic sub-lattice of oxygen atoms. They differ only by the behavior of …

X-ray diffraction and Raman spectroscopy of H 2 O (ice) structures are measured under
static compression in combination with grain normalizing heat treatment via direct laser …

In a superionic (SI) ice phase, oxygen atoms remain crystallographically ordered while
protons become fully diffusive as a result of intramolecular dissociation. Ice VII's importance …

Above 2 GPa the phase diagram of water simplifies considerably and exhibits only two solid
phases up to 60 GPa, ice VII and ice VIII. The two phases are related to each other by …

Simultaneous high-temperature and high-pressure studies reveal phase transformation of
bulk liquid water to an ice-VII-like structure having an eight coordination. It was …