Abstract

We have systematically investigated the effects of 300 MeV Xe irradiation along c-axis in optimally Co-doped BaFe2As2. Reflecting the cascade defects morphology induced by the irradiation, Tc in this system is reduced while the value of ΔT/Tc is small. Here we report the details of suppression rates of Tc experimentally without an ambiguity of piece dependencies. We found that the reduction is systematic if we assume sample thickness dependence in creating defects. We also discuss the observed saturation behavior of Jc in terms of defect density.

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