Structure formation under negative pressures

The work considers the structural features of condensed phases under negative pressures that can be implemented under all-round stretching. It results in a decrease in the phase density due to an increase in interatomic distances, the appearance of structural defects, and the formation of new low density structures. It is noted that the stretched states are also characteristic of metastable phases such as liquids, glasses, and loose crystal structures in the region of positive pressures.