Robust critical current density in applied magnetic fields in 5 μm thick, SmBa2Cu3O7−δ based superconducting wires

Abstract We report the magnetic field and temperature dependence of the critical current density { J c ( H ) and J c ( T )} flowing in a 5 μm thick sample of SmBa 2 Cu 3 O 7− δ (SmBCO) film. The film is a coated conductor (CC) deposited on an IBAD-MgO textured metallic template. For a range of intermediate fields, we find J c α H - α with values of α between 0.44 and 0.49. These values are lower than those reported for other CC in the literature. The sample has a J c of 13.6 MA/cm 2 at 5 K and self-field. Such high- J c wires should find applications in large-scale energy applications of high-temperature superconductors. The temperature dependence of J c at self-field and different applied fields is also analyzed.