Seminar of International Laboratory of High Magnetic Fields and Low Temperatures PAS

Transport critical current densities in superconductor-ferromagnet heterostructures

V. L. Bezusyy

One of the important parameters for application of high-temperature superconductors is the critical current density J_c. The value of J_c may be increased by increasing the flux pinning capability of the superconductor. The investigation of hybrid systems consisting of superconductors and metallic ferromagnets has shown that it is possible to enhance the intrinsic flux line pinning in superconductors by the introduction of magnetic structures in vicinity of the superconductors. In this report I will present the initial results of IV characteristic measurements of superconducting films grown on both substrate and buffered ferromagnetic layers. Obtained by transport measurements values of critical current density for superconductor-ferromagnet heterostructures with different thickness of layers will be compare.