Critical currents of Sm1Ba2Cu3O7-delta films grown on various substrates

Abstract

We observed that a Sm1Ba2Cu3O7-delta (SBCO) film i grown on a YSZ substrate with arbitrarily oriented crystal was textured in a single crystalline orientation, while there seems to be no noticeable relation between the crystalline orientations of the film and the substrate. The SBCO[103] axis was close to the surface face normal axis. On the other hand, we could not grow an YBCO film on the same substrate, which implies the growth of SBCO filch is more stable than YBCO film on that substrate. The qualities of SBCO films grown at substrate temperatures across a wide range of 680degreesC-750degreesC were similar. The-critical current density of this SBCO film was similar to3 times smaller than that of SBCO film on a RABiTS-Ni tape, which is several times smaller than that of the YBCO film of coated conductor.