Ink-plotting of YBa2Cu3O7-x- filamented structures
A.Kirchner(1), R. Hühne(1), I. Birlik(1), P. Vermeir, (2) I. Van Driessche (2), L. Schultz1, B. Holzapfel(1). (1)IFW Dresden, Institute for Metallic Materials, (2)Dep. Inorganic and Physical Chemistry, Ghent University (2011).
Chemical Solution Deposition (CSD) is a promising process for industrial long length production of high temperature superconducting tapes because of its low-cost, high-speed production and good scalability. YBa2Cu3O7-x (YBCO) coated conductors are the favourable material with excellent superconducting properties including sufficient high Jc-performance. Nevertheless, the alternating current (ac)-losses are still too high for applications of wires in motors. A special plotting technique allows a printing of filamented structures of YBCO thin layers. The hysteresis losses in such striped films are much lower than in continuously coated substrates with a homogeneous YBCO layer.
Lines as well as rectangular shaped YBCO-structures were deposited by an ink plotting system on single crystal substrates. Different inks were tested, among them an environmentally friendly, water-based fluorine-free YBCO precursor solution as well as an ink, synthesised according to the TFA route.