[en] The review concerns the results of studies reported in the last decade and concerning oxide ferromagnetic semiconductors which retain the spin orientation of charge carriers above room temperature. Particular attention is paid to methods of preparation of diluted magnetic semiconductors. Methods of synthesis and peculiarities of the physicochemical properties of films and coatings based on ferromagnetic semiconductors are described and prospects for application of these compounds as materials for spintronics are discussed. The bibliography includes 160 references.