Abstract
We are developing a cryocooled (RE)Ba2Cu3O7 (REBCO; RE = rare earth) persistent-mode superconducting magnet system that generates 1 T with multiple superconducting joints. In parallel to the design of the system, we have investigated transport characteristics of the REBCO superconducting joints. Critical currents (Ic) were measured as a function of magnetic field and temperature. Two joint samples with Ic of 107 and 53 A at 77 K, self-field were measured. The first one showed Ic of 357 A at 50 K and 0.1 T (magnetic field is perpendicular to the tape surface). Ic of the REBCO joint samples showed remarkable hysteresis. The anisotropy of Ic changed with temperature. Ic at B perpendicular to the tape were higher than those at B parallel to the tape at temperatures below 20 K. The random pinning is possibly the dominant pinning mechanism in the whole temperatures for the REBCO superconducting joints in magnetic fields perpendicular to c-axis.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
