2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/20353The properties of the superconducting ferromagnets RuSr2(Gd/Eu)Cu2O8 and RuSr2(Ln/Ce)2Cu2O10 are reviewed. The problem of coexistence and competition between magnetic and superconducting states is discussed. A model of phase separation into ferromagnetic and anti-ferromagnetic structures is proposed.To appear in "Studies of High-Temperature Superconductors", Vol. 46, ed. A. V. Narlikar (Nova Science Publ., New York)SuperconductivityStrongly Correlated Electronstext