In cooperation of the National Institute of Material Sciences (NIMS), Kobe Steel, JEOL and RIKEN Life Science Center Yokohama, this result was recorded on October 1, 2014, using a bismuth-based high temperature superconducting wire.
RIKEN news release, Oct. 2, 2014
RIKEN reports 1001 MHz (23.4 Tesla) magnetic field generation, a world record