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In general, the critical current density,  J  c , of type II superconductors and its anisotropy with respect to magnetic field orientation is determined by intrinsic and extrinsic properties. The Fe-based superconductors of the ‘122’ family with their moderate electronic anisotropies and high yet accessible critical fields ( H  c2  and  H  irr ) are a good model system to study this interplay. In this paper, we explore the vortex matter of optimally Co-doped BaFe 2 As 2  thin films with extended planar and  c -axis correlated defects. The temperature and angular dependence of the upper critical field is well explained by a two-band model in the clean limit. The dirty band scenario, however, cannot be ruled out completely. Above the irreversibility field, the flux motion is thermally activated, where the activation energy  U  0  is going to zero at the extrapolated zero-kelvin  H  irr  value. The anisotropy of the critical current density  J  c  is both influenced by the  H  c2  anisotropy (and therefore by multi-band effects) as well as the extended planar and columnar defects present in the sample.

High field superconducting properties of Ba(Fe1−xCox)2As2 thin films