MT27, 27th International Conference on Magnet Technology

Superconducting properties of Ce and La co-doped RE123 thin films fabricated by fluorine-free MOD method

WED-PO2-607-08

17 Nov 2021, 10:30

2h

Fukuoka Convention Center

Poster WED-PO2-607 Coated Conductor Processing and Flux Pinning

Speaker

Mr Taishi Hatano (Tokyo Metropolitan University)

Description

We have fabricated Ce and La co-doped Gd123 thin films on LaAlO₃ single crystal substrates by the fluorine free metal organic deposition method (FF-MOD). From our previous study, it is confirmed that Ce doping is effective in introducing artificial pinning centers (APCs) into GdBa₂Cu₃O_y coated conductors. In addition, La doping promotes crystallization and crystal growth of the superconducting phase. By possessing both advantages, Ce 2.0 mol% and La 1.0 mol% co-doped Gd123 film achieved high critical current densities of 0.267 MA cm^-2 at 1.0 T, 77.3 K. This improved by about 84% than that for non-doped one. To investigate the effectiveness by other rare earth doping, we also have replaced Gd to them and evaluated those superconducting properties.