Soluble resins were prepared by controlled hydrolysis of yttrium isopropoxide, barium isopropoxide and copper ethylhexanoate. The resins were converted to cohesive, viscous, fluid and precipitated states by the addition of different combinations of binary polar and non-polar organic solvents. Viscosity and spinnability of the resins were critically dependent on the solvent constituents. Continuous pre-ceramic fibers were spun from these resins and single phase YBa2Cu3Oy superconducting fibers with Tc=91.5K and ΔT=1.5K have been obtained.
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Chen, K.C., Chen, A.Y. & Mazdiyasni, K.S. Metallo-Organics Derived Tractable Resins for Ybco Superconducting Fiber Fabrication. MRS Online Proceedings Library 180, 913 (1990). https://doi.org/10.1557/PROC-180-913