Why choose Fujikura?

Fujikura's rare earth high-temperature superconducting wire has excellent mechanical properties and critical current characteristics at low temperatures and high magnetic fields, and in recent years has been highly praised for its quality and is expected to be used in a variety of next-generation devices.

World-class high-level critical current characteristics in magnetic fields

High critical current characteristics at low temperatures and in high magnetic fields achieved by introducing artificial pins

Figure 1: Single-fiber and multi-fiber connectors

*Some of the measurement data was collected at the High Magnetic Field Superconducting Materials Research Center, Institute for Materials Research, Tohoku University.

Practical level of length

Our unique manufacturing technology realizes long wire rods for practical use

*Full-length current measurements are performed using the four-terminal method at 77K (in liquid nitrogen), in a self-magnetic field, and with a standard of 1μV/cm.
*The above measurement data is an example and does not guarantee the performance of all wire materials.

High critical current uniformity in the longitudinal direction

Unique manufacturing technology realizes excellent critical current uniformity in long wires

*Total length magnetization measurements were performed using TapestarTM, a trademark of THEVA.
*In magnetization measurements (critical current measurements using the magnetization method), the measurement program converts the response to a weak magnetic field into critical current, and does not guarantee the actual critical current.
*The above measurement data is an example and does not guarantee the performance of all wire materials.
*Since magnetization measurement has a high measurement resolution, the red line shows the maximum value in a given section calculated by the measurement program according to the wire length, and the blue line shows the minimum value.

Fujikura's superconducting wire manufacturing technology that achieves high performance

IBAD method (Ion Beam Assisted Deposition)

Intermediate layer manufacturing technology
Fujikura's proprietary technology (developed in 1991)
In order to improve superconducting properties, it is important to align the crystal orientation, and by establishing a technology to align the crystal orientation of the intermediate layer, it has become possible to align the crystal orientation of the superconducting layer as well.

PLD method (Pulsed Laser Deposition)

manufacturing method of superconducting layer
The hot wall type PLD method is Fujikura's proprietary development
By using a method in which the deposition area is surrounded by a high-temperature wall called a hot wall, the temperature is successfully stabilized, making it possible to form a high-quality superconducting layer.

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