Applications of superconductivity at the boiling temperature of liquid nitrogen continue to challenge physicists, materials scientists and engineers all over the world eight years after the discovery of high temperature superconductivity. The key to a solution of today's problems lies in the optimization of the defect structure in well-oriented oxide materials as well as in a fundamental understanding of the magnetic microstructures in the mixed state and how they are affected by the crystallographic nature ('dimensionality') of these materials. Fifteen invited overview lectures as well as approximately 150 contributed papers highlight the state of the art in this important field of superconductivity and review our current knowledge of critical currents in superconductors.
Flux lines in 3D and 2D superconductors, E.H. Brandt; the structure of magnetic flux of high temperature superconductors, L. Ya Vinnikov; TEM of superconducting wires and tapes - current limiting defects and pinning active defects, O. Eibl; TEM investigations of radiation induced defects in YBa2Cu3O7-d single crystals, M.C. Frischherz; critical currents and irreversibility lines in high-Tc YBa2Cu3O7 thin films, R. Watanabe; superconducting properties of BSCCO thin films and BSCCO multilayers, H. Raffy; true critical currents, activation energies, thermal activated creep and macroscopic vortex tunneling, R. Griessen; supercurrent density and vortex pinning in YBa2Cu307-d materials, versus oxygen content, J.R. Thompson; critical currents and magnetization of NbTi and Nb3Sn multifilamentary superconductors, H. Krauth; general trends in high-Tc superconductors - old and new materials, J.L. Tallon; microstructural aspects of Ag shealthed (Bi,Pb)2Sr2Ca2Cu3Ox conductors with high critical current density and high tensile strength, Y. Yamada; Bi(2223) tapes - fabrication and flux pinning, R. Fluekiger; where is the critical current carried in 2223-BSCCO and what limits it?, D.C. Larbalestier. (Part contents)