Title: FERROMAGNETIC ORDERING IN DILUTED MAGNETIC SEMICONDUCTORS
Author(s): A.H.Slobodskyy (Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 5 Vilde Str., 58001 Chernivtsi, Ukraine; Institute of Physics, Polish Academy of Sciences, al. Lotnik\'ow 32/46, 02-668 Warszawa, Poland; Physikalisches Institut, Universit\"at W\"urzburg, Am Hubland, 97074 W\"urzburg, Germany), V.K.Dugaev (Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 5 Vilde Str., 58001 Chernivtsi, Ukraine; Department of Electronics and Communications, Instituto Superior de Engenharia de Lisboa, 1949-014 Lisbon, Portugal), M.Vieira (Department of Electronics and Communications, Instituto Superior de Engenharia de Lisboa, 1949-014 Lisbon, Portugal)

We present a general approach to the problem of a ferromagnetic phase transition in diluted magnetic semiconductors. The Curie temperature of ferromagnetic transition is calculated in the mean field approximation. It is shown that the Curie temperature is determined by an integrated coupling between magnetic impurities.

Key words: magnetic semiconductors, magnetic impurities, ferromagnetism
PACS: 75.30.-m, 75.50.Dd, 75.50.Pp