Simultaneous constraint and phase conversion processing of oxide superconductors

A method for making a BSCCO 2223 oxide superconductor article, comprising:

• providing a precursor composite comprising one or more filaments of BSCCO 2212 in a metal matrix;
• texturing the BSCCO 2212 precursor composite in a rolling deformation step, wherein the rolling deformation results in a 40-95% reduction in thickness of the composite;
• converting the textured BSCCO oxide superconducting precursor into a BSCCO 2223 oxide superconductor, while simultaneously applying a force to the precursor which at least matches the expansion force experienced by the precursor during phase conversion to the BSCCO 2223 oxide superconductor,
• whereby the near net shape of the oxide superconductor precursor is substantially retained during phase conversion and whereby no further densification or texturing of the composite occurs.