SuNAM’s RCE-DR (Reactive Co-Evaporation by Deposition and Reaction) process has been proved to be a high-throughput, cost-effective production method for the deposition of superconducting layer for coated conductor(CC). We showed that higher than 1 kA/cm-width critical current tape can be produced routinely, though our standard product comes with 700~800 A/12 mm-width only because we care for overall process optimization.
We improved in-field critical current of our tapes by i)optimization of intrinsic pinning of RE2O3 by the control of starting composition and/or process temperature and gas pressure, ii) mixture of RE materials such as Gd, Y, Sm, etc. The results are very promising in mid-field of upto 10 T and our current effort is on extending to a higher field.
In addition to our catalog of high-field magnets of 26.4 T(highest field achieved with HTS at that time) and 18 T(the first commercial high-field HTS magnet to our knowledge), we succeeded in developing highly homogeneous 9.4-T mange for 400 MHz NMR.
SuNAM’s recent activities, in addition to the above mentioned ones, will be presented.