Water-like Anomalies from Repulsive Interactions
In tetravalent network materials like quartz or ice the main interactions are the strong bonds that connect each vertex to four others and the repulsive forces that keep non-bonded vertices further apart. Those interactions, modelled by square wells, are shown to be sufficient to account for the stability of ice-like crystals, with tetrahedral bond angles, at low temperature; endothermic melting of the crystal to a denser water-like amorph at intermediate temperatures; exothermic collapse of the supercooled crystals at high pressure, to a glass, without breaking any bonds; expansion on cooling of both the crystal and the amorph; and a line of spinodal instabilities in the water-like supercooled amorph where the compressibility, heat capacity and negative expansivity diverge.
- 高圧力の科学と技術 = The Review of high pressure science and technology
高圧力の科学と技術 = The Review of high pressure science and technology 7, 1094-1099, 1998
The Japan Society of High Pressure Science and Technology