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Korea Institute of Machinery & Materials

Korea Polytechnic University Industry Academic Cooperation Foundation

Gye-Won Hong

Hee-Gyoun Lee

Kyeong Dal Choi

Seung Wook Lee

Jai-Moo Yoo

Hee-Gyon Lee

Sang-Im Yoo

Disclosed are a superconductive magnet manufactured by winding a thin superconductive rod wire in a coil without joint for maintaining a persistent current mode, and a method for manufacturing the same. The method includes winding both ends of a superconductive rod wire () on a first bobbin () and a second bobbin () respectively; forming a first unit rod wire () and a second unit rod wire () by slitting the superconductive rod wire () in the lengthwise direction; producing a pancake coil by winding the first and second unit rod wires () on third bobbins () in one direction; and arranging the first and second unit rod wires () such that magnetic fields (B, B') in the same direction are generated from the pancake coil, by reversing one of the third bobbins () on which the first and second unit rod wires () are wound.

Superconductive magnet for persistent current and method for manufacturing the same

Disclosed is the structure of a persistent current switch and a control method for the same. In the switch structure, a portion of a superconducting wire to be used as a switch is formed with slits such that the flow of current is controlled by the switch, to facilitate a transition between the superconducting state and the normal state of the superconducting wire. The structure of the persistent current switch includes a first slit longitudinally extending from a first point on one end of a superconducting wire to a second point and from a third point to a fourth point, the second, third, and fourth points being arranged sequentially in a longitudinal line, and second and third slits provided at opposite sides of a region between the second point and the third point where no first slit exists.

Structure of persistent current switch and that of control method

There is provided a method of fabricating a precursor solution for a metal organic deposition method using a superconducting oxide as a starting material, wherein the method includes dispersing a superconducting material powder in a TFA acid aqueous solution, heating to dissolve the powder in the TFA solution, increasing a temperature of a hot substrate if the powder is completely dissolved and the solution is clear, continuously heating until the solution is vaporized and is in a viscous jelly state, stopping heating if the solution loses its flowing property completely, cooling the solution, and dissolving the compound in the jelly state, hardened at a room temperature, into an organic solvent to provide a metal organic deposition solution for coating. There is also provided a method of fabricating a thin film-type superconductor using a metal organic deposition method.

Method for manufacturing a metal organic deposition precursor solution using super-conduction oxide and film superconductor

Growing community of inventors

Seongnam-si, South Korea

Gye-Won Hong