2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/16572The equations for phase transitions temperatures, order parameters and critical concentrations of components have been derived for mixed ferroelectrics. The electric dipoles randomly distributed over the system were considered as a random field sources. We derive a random field distribution function for different orientations of the electric dipoles with nonlinear and spatial correlation effects included.7 pages, 4 figures, ReVTeXMaterials Sciencetext