Phases of ice - Wikipedia
There are also two metastable phases of ice under pressure, both fully hydrogen-disordered; these are Ice IV and Ice XII. Crystal structure of ice I h. Dashed lines represent hydrogen …
Formation of ice XII at different conditions | Nature
1999年2月25日 · The structural versatility of solid water has been reinforced by the identification of a metastable, crystalline phase called ice XII (ref. 1). It was obtained by cooling liquid water …
Ice XII substructure - London South Bank University
Ice-twelve (ice XII) may be formed by heating high-density amorphous ice at a constant pressure of 0.81 GPa from 77 K to ≈ 183 K at a rate of ≥ 15 K min −1 and recovered at atmospheric …
The structures of ice-twelve (ice XII) and ice-fourteen (ice XIV); …
Ice-twelve (Ice XII) This structure (below) does not have the ordered protons shown. The protons are actually randomly oriented (obeying the ' ice rules ': two hydrogen atoms near each …
The Raman Spectrum of Ice XII and Its Relation to that of a New …
2001年12月8日 · Pure ice XII was prepared in a reproducible manner on heating high-density amorphous ice (HDA) at a pressure of 0.81 GPa up to ≈180 K at a rate of 25 K min -1, …
Phys. Rev. Lett. 84, 4112 (2000) - Ice XII in Its Second Regime of ...
2000年5月1日 · We present neutron powder diffraction results which give unambiguous evidence for the formation of the recently identified new crystalline ice phase [[2]], labeled ice XII, in …
Molecular dynamics simulation of ice XII - ScienceDirect
1999年2月5日 · Molecular dynamics simulations have been performed on the newly discovered metastable ice XII. This new crystalline ice phase [C. Lobban, J.L. Finney, W.F. Kuhs, Nature …
Ice XII in its second regime of metastability - PubMed
2000年5月1日 · We present neutron powder diffraction results which give unambiguous evidence for the formation of the recently identified new crystalline ice phase [2], labeled ice XII, in …
Title: Ice XII in its second regime of metastability - arXiv.org
2000年2月15日 · Ice XII is produced here by compressing hexagonal ice I_h at T = 77, 100, 140 and 160 K up to 1.8 GPa. It can be maintained at ambient pressure in the temperature range …
Evasive ice X and heavy fermion ice XII: facts and fiction about …
1999年4月2日 · Theoretical evidences for an additional orthorhombic modification (ice XI) at higher pressures are confronted with various reasons supporting a delocalization of the …