A technology invented at the U.S. Department of Energy (DOE)'s Oak Ridge National Laboratory (ORNL) for manufacturing copper-oxide-based high-temperature superconducting materials has been used to make an iron-based superconducting wire capable of carrying very high electrical currents under exceptionally high magnetic fields.
Researchers at Brookhaven National Laboratory took a RABiTS, or rolling-assisted biaxially textured substrate, comprised of a nickel-tungsten metal alloy with hetereoepitaxial buffer layers of Y2O3, YSZ, CeO2, and epitaxially deposited an iron-based high-temperature superconducting layer. The work was published online in Nature Communications.
The single-crystal-like RABiTS were developed in the 1990s by an ORNL team led by Corporate Fellow and Battelle Distinguished Inventor Amit Goyal. Iron-based high-temperature superconductors are a relatively recent discovery; many of the previous high-temperature superconductors were copper-based.
The iron-based superconductors can be synthesized at lower temperatures than the copper-oxide materials, and hence are seen as easier to work with. Brookhaven's experiment used RABiTS with a cerium oxide top layer.To read more, click here.