It is known that superconducting technology is used in MRI (Magnetic Resonance Imaging: Magnetic Resonance Imaging) equipment in the medical field and in silicon crystal furnace pulling equipment in the semiconductor field. Conventional superconducting devices use metal-based low-temperature superconductors cooled by liquid helium (minus 269 degrees Celsius). However, liquid helium is a rare natural resource, and there are problems in terms of price hikes and procurement. Therefore, the rare-earth-based high-temperature superconductor we at Fujikura is developing is expected to be put into practical use soon, which will realize next-generation high-temperature superconducting applications with no use of liquid helium.
Rare-earth-based high temperature superconductor is manufactured by depositing an copper-oxide-based superconducting material made of rare earth (Yttrium, etc.) on a nickel-based substrate through a buffer layer fabricated by ion beam assisted deposition (IBAD). Rare-earth-based high-temperature superconductor is a high performance material among high-temperature superconductors and especially show high critical current performance in a strong magnetic field, high current density and low AC loss.
Since the discovery of high-temperature superconducting materials in 1987, we have focused on development of rare-earth-based high-temperature superconductors and achieved world's top superconducting performance. At present, we are performing the development of mass-production technology for a longer piece and a lower cost. We are also actively developing applications such as superconducting coils.
We will continue our research and development to contribute to a low-carbon society by providing our rare-earth-based high-temperature superconducting products.
|Rare-earth-based high-temperature superconductor||Rare-earth-based high-temperature superconducting coil|