Shape, dimensions and materials
Flat tapes have superior bending properties, while round, square and rectangular wires behave better in external magnetic fields. Conductors can be designed and produced for use in both DC and AC environments. Copper is usually requested to provide electrical and thermal protection for a superconducting wire in the unlikely event of a sudden loss of superconductivity due to exogenous factors. For this reason copper is usually present in the MgB2 wires produced by Columbus Superconductors, but it is not in direct contact with the superconductor. Non-copper wires are also manufactured if required for specific applications. The outer sheath can be made from nickel, monel and other alloys (both magnetic and non-magnetic) to increase mechanical strength. Wire twisting and insulation are also available on request.
For technical information, please look at Focus - R&D section