Study of Grain Connectivity and Flux Pinning Effect in Polycrystalline and Single Crystal Thin Films of Ba(Fe1-xCox)2As2 Superconductors

Magneto-Optical Imaging (MOI) is a powerful tool for studying the magnetic flux distribution in different superconductor forms. MOI, together with other electromagnetic techniques, SEM, TEM and low-temperature laser scanning microscopy (LTLSM), were successfully applied to different forms of the newly discovered Fe-based superconductors, where th