Impact of deoxygenation/reoxygenation processes on the superconducting properties of commercial coated conductors.

We report the evolution of the superconducting properties of a commercial coated conductor during deoxygenation and reoxygenation processes. By analyzing the changes on the critical temperature, T, and critical current density, J, at 4 and 77 K, we have identified the conditions that cause a complete deoxygenation of the coated conductor and, also, the reoxygenation conditions that allow a recovery of the superconducting properties. A complete suppression of superconductivity happens at ~ 500-550 °C under a pure argon flow.

Progresses and challenges in the development of high-field solenoidal magnets based on RE123 coated conductors.

Recent progresses in the second generation REBaCuO (RE123) coated conductor (CC) have paved a way for the development of superconducting solenoids capable of generating fields well above 23.5 T, i.e.