While a moderate correlation was observed between H mean inter and k, the crystalline shape evolves differently between growth and equilibrium stages. The growth form calculated from k i (displayed in Fig. ) was with low surface flatness and similar plate-like shape to the equilibrium form (shown in Fig. ). The equilibrium form is close to experimentally observed shapes that have an aspect ratio of around 1:3 and flattened surfaces. Those observations have been reported for β-Li 3 PS 4 synthesized by the liquid-phase route. Hence, solvent molecules may affect the shape of the crystals. The blocks constructed in the crystal assembly on the substrate, as created by Hood et al., have a square plate-like form. However, this may not be directly comparable to the present study, which assumes crystal formation from the bulk. The growth form is also sensitive to environmental factors such as impurities and crystalline defects. Although various factors influence the crystalline form, experimental observations likely reflect the equilibrium form. .