Abstract

High temperature superconductor (HTS) wires and tapes have been an area of intense research, development and scaling up for manufacturing. Remarkable success has been achieved in overcoming problems with grain boundaries, anisotropy, and poor mechanical properties of ceramic HTS materials to fabricate wires and tapes. First-generation HTS tapes based on thermomechanical processing have been the workhorse of the superconductor industry, and several prototypes have been made for over a decade. Second-generation (2G) HTS tapes based on epitaxial thin-film deposition on highly-textured templates on flexible alloy substrates have been developed with numerous innovations in materials science, deposition processes and manufacturing equipment.

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