The key technology for making 2G HTS wire rods is
MgO-IBAD composition formation process by magnetron sputtering,
Formation of GdBaCuO superconducting film by PLD
SOJ is capable of producing 2G HTS wire up to 700 m with the critical current (Ic) of 700A. The mass production of the commercial quality 2G HTS wire is aimed at 250-300m long and Ic of 400A for 12 mm tape. The manufactured superconducting wires have excellent homogeneity of the critical current Ic along the tape length.
By enclosing electrons in a magnetic field using a magnet, a dense plasma region can be created, the probability that argon atoms will collide with the target can be increased, and the speed at which they adhere to the substrate can be increased.
Abbreviation for Pulsed Laser Deposition. A device for producing thin films. A thin film is formed by hitting the target with a laser several times per second to evaporate the substance, fly it to the substrate, and deposit it.
Ion Assisted Deposition Method: The IBAD method (Ion Beam Assisted Deposition Method) was developed in 1991 by irradiating an assisted ion beam from a certain angle to grow only crystals oriented in a specific direction. It is a method that can create an in-plane oriented intermediate layer, which can be used as a substrate for superconducting wires.
Developed next-generation high-temperature superconductivity with a length of 700m
SuperOx Japan is now able to produce next-generation high-temperature superconducting (2GHTS) tapes with a length of 700 m and a critical current of 700 A, with the aim of commercializing them with a width of 12 mm.
The Ic of the superconducting tape actually created shows the characteristic of being very uniform in the length direction.
2G HTS wire structure
The figure below shows the structure of the superconducting wire developed by SuperOx Japan.
By combining magnetron sputtering and pulsed laser deposition (PLD), it is possible to efficiently produce wire rods.
Our annual production is about 100km.