Magnetoresistivity, Seebeck, Nernst and Hall effects in the mixed and normal state of (Bi1.6Pb0.4)Sr2Ca2(Cu1-xNix)(3)O-y epitaxial films

Measurements of the ac susceptibility, magnetoresistivity, Seebeck, Nernst, and Hall coefficients in Ni doped (Bi,Pb)2223 superconductors, in magnetic fields between 0 and 5 T, and in the temperature range 5-300 K, are report ed. The critical temperatures, the Hall, Nernst and Seebeck coefficients de pend strongly on the nickel content. In the mixed state and fluctuation reg ime these call be explained by, Ginsburg - Landau theory. The deviation fro m linear dependence of mu (-1)(H) = f(T-2), n(H)(T) in the normal sate can Me interpreted In the percolative phase separation theory, and S(T) depende nce in the frame of the asymmetric narrow - band theory.