Title: A trapped field of 13.4 T in a stack of HTS tapes with 30 μm substrate,
Abstract: Superconducting bulk (RE)Ba$_2$Cu$_3$O$_{7-x}$ materials (RE-rare earth
elements) have been successfully used to generate magnetic flux densities in
excess of 17 T. This work investigates an alternative approach by trapping flux
in stacks of second generation high temperature superconducting tape from
several manufacturers using field cooling and pulsed field magnetisation
techniques. Flux densities of up to 13.4 T were trapped by field cooling at ~5
K between two 12 mm square stacks, an improvement of 70% over previous value
achieved in an HTS tape stack. The trapped flux approaches the record values in
(RE)BCO bulks and reflects the rapid developments still being made in the HTS
tape performance.