Superconducting property of Y1Ba2Cu3Ox films formed on silver substrates by continuous chemical vapor deposition technique

A new CVD system that equipped a triple-reactor was developed to improve the forming rate or the superconducting tape, Three-layered Y123 films with good crystallinity covering the total thickness were obtained directly on roll milled non-textured Ag tapes by using this triple-stage CVD system. 11 m long Y123 tape with uniform Jc of 3.0x10(4) A/cm(2) at 77 K, 0 T was successfully prepared on roll milled non-textured Ag tape at a forming rate of 3.0 m/h, Y123 films formed directly on the cube-textured Ag{100}< 001 > tapes showed two types of orientation, cube-on-cube and diagonal-on-cube, between Y123 and Ag, On the other hand, Sm123 and Nd123 films showed the simple orientation, cube-on-cube, so these films were expected to improve the in-plane alignment of Y123 him by inserting them as the intermediate layer.