Bicontinuous phase in a lattice model for surfactant mixtures

A lattice counterpart of a bicontinuous phase is found in a three‐dimensional lattice model of ternary surfactant mixtures. The structure of this phase is determined and discussed. The region of stability of the new phase in the parameter space is found at zero temperature. Also determined are the boundary of stability of the disordered phase, the water–water structure factor in this phase, and the disorder line.