A continuum of amorphous ices between low-density and high-density amorphous ice.

ABSTRACT: Amorphous ices are usually classified as belonging to low-density or high-density amorphous ice (LDA and HDA) with densities ρ_LDA ≈ 0.94 g/cm³ and ρ_HDA ≈ 1.15-1.17 g/cm³. However, a recent experiment crushing hexagonal ice (ball-milling) produced a medium-density amorphous ice (MDA, ρ_MDA ≈ 1.06 g/cm³) adding complexity to our understanding of amorphous ice and the phase diagram of supercooled water. Motivated by the discovery of MDA, we perform computer simulations where amorphous ices are produced by isobaric cooling and isothermal compression/decompression. Our results show that, depending on the pressure employed, isobaric cooling can generate a continuum of amorphous ices with densities that expand in between those of LD

SUBMITTER: Eltareb A 

PROVIDER: S-EPMC10879119 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature