TRANSPORT-PROPERTIES OF (BIPB)(2)SR2CA2CU3O10 TEXTURED TAPES IN THE MIXED-STATE

We discuss the resistivity, the Hall effect, the Nernst effect, and th e magnetization in the mixed state taking the motion of the Abrikosov and Josephson vortices into account. Measurements on a (BiPb)(2)Sr2Ca2 Cu3O10 tape point out how the contribution of the Josephson vortices t o the resistivity rho(J) prevails at low temperatures and an analytica l expression for rho(J) is proposed. Above the irreversibility line th e Hall effect, the Nernst effect, and the magnetization are less affec ted by the granularity of the material and, at first approximation, ca n be considered to tie intrinsic properties. Starting from this assump tion, we calculate the contribution of the Abrikosov vortices to the r esistivity rho(A) using the Nernst effect and the reversible magnetiza tion data. The rho(A) thus calculated has an order of magnitude close to the values reported in literature for single crystals, and shows an activated behavior with temperature, whose activation energy value is in strict agreement with that measured in epitaxial thin films of Bi( 2223) compound.