Iron based superconductors on flexible coated conductor templates

The discovery of high temperature superconductivity in layered iron-based material has ignited also significant scientific interest for technological applications. Iron based superconductors are particularly promising for high field applications due to its high upper critical field and low anisotropy. To realize such applications, the coated conductor technology based on textured IBAD (Ion beam assisted deposition) layers can be used. Additionally, such templates might be applied to investigate the influence of uniaxial strain on the superconducting properties. Therefore, we deposited pure as well as Te doped FeSe with a thickness of up to 200 nm on buffered IBAD substrates having a final cap layer of either CeO₂ or LaMnO₃. We found that FeSe_1-xTe_x (FST) and FeSe is grown epitaxially on these buffered metal tapes under optimized conditions with a superconducting transition temperature of up to 16 K for textured FST film on CeO₂ buffered metal tape. Finally, we will present first results on the influence of uniaxial strain on the superconducting transition using these templates.