# Laves phase

In each of the three classes of Laves phase, if the two types of atom were perfect spheres with a size ratio of ${\displaystyle {\sqrt {3/2}}\approx 1.225}$,[2] the structure would be topologically tetrahedrally close-packed.[3] At this size ratio, the structure has an overall packing volume density of 0.710[4] Compounds found in Laves phases typically have an atomic size ratio between 1.05 and 1.67.[3] Analogues of Laves phases can be formed by the self-assembly of a colloidal dispersion of two sizes of sphere.[2]