Molecular Dynamics simulation was performed to gain deeper insight on the effect of compression on liquid GeO 2 , in particular on the transition between low-density phases to high-density phases. Similarities in the increase of GeO x coordination number and the number of OGe y links to the density increase allowed a characterization of the model densities at various values of pressure. The intermediate density phase displays not only an abundance in GeO 5 units but also the coexistence of at least two large GeO x clusters of varying densities. Finally, the ring structures found in the regions of various densities suggest differing material properties that can arise from structural and topological heterogeneity. This work covers the gap on the effect of pressure on the micro-phase separation and ring structure in liquid germania.
Plan et al. (Sun,) studied this question.