Abstract: Provided is a connection body of high-temperature superconducting wire materials including a first oxide high-temperature superconducting wire material and a second oxide high-temperature superconducting wire material, characterized in that a first superconducting layer of the first oxide high-temperature superconducting wire material and a second superconducting layer of the second oxide high-temperature superconducting wire material are bonded together via a junction including M-Cu—O (wherein M is a single metal element or a plurality of metal elements included in the first superconducting layer or the second superconducting layer). The connection body may be, for example, a connection body of Bi2223 wire materials, and the junction may include CaCuO2.

Abstract: The method is for manufacturing a high temperature multi-filamentary superconducting tape wire having an oxide superconducting layer formed on a tape-shaped metal substrate with an intermediate layer therebetween and a metal stabilizing layer formed on the oxide superconducting layer, wherein one or more lengthwise slits are formed in the oxide superconducting layer and the intermediate layer and no slits are formed in the metal substrate and the stabilizing layer. The method includes: a step for preparing a high temperature superconducting wire material having an oxide superconducting layer formed on a tape-shape metal substrate with an intermediate layer therebetween and a stabilizing layer formed on the oxide superconducting layer; and a step for applying a load to the high temperature superconducting wire material to form slits.

Abstract: Provided is a connection body of high-temperature superconducting wire materials including a first oxide high-temperature superconducting wire material and a second oxide high-temperature superconducting wire material, characterized in that a first superconducting layer of the first oxide high-temperature superconducting wire material and a second superconducting layer of the second oxide high-temperature superconducting wire material are bonded together via a junction including M-Cu—O (wherein M is a single metal element or a plurality of metal elements included in the first superconducting layer or the second superconducting layer). The connection body may be, for example, a connection body of Bi2223 wire materials, and the junction may include CaCuO2.

Abstract: Provided is a low-resistance connection body for a high-temperature superconducting wire, in which a high-temperature superconducting bulk body and a high-temperature superconducting wire including a high-temperature superconducting layer are connected to each other, wherein a melting point of the high-temperature superconducting layer is higher than a melting point of the high-temperature superconducting bulk body; the high-temperature superconducting layer and the high-temperature superconducting bulk body are in contact at a connection site of the high-temperature superconducting wire and the high-temperature superconducting bulk body; and a surface of the high-temperature superconducting bulk body that is in contact with the high-temperature superconducting layer is crystallized due to crystal growth. Two high-temperature superconducting wires can be connected, with low resistance, through connection of the two high-temperature superconducting wires to one high-temperature superconducting bulk.

Abstract: The method is for manufacturing a high temperature multi-filamentary superconducting tape wire having an oxide superconducting layer formed on a tape-shaped metal substrate with an intermediate layer therebetween and a metal stabilizing layer formed on the oxide superconducting layer, wherein one or more lengthwise slits are formed in the oxide superconducting layer and the intermediate layer and no slits are formed in the metal substrate and the stabilizing layer. The method includes: a step for preparing a high temperature superconducting wire material having an oxide superconducting layer formed on a tape-shape metal substrate with an intermediate layer therebetween and a stabilizing layer formed on the oxide superconducting layer; and a step for applying a load to the high temperature superconducting wire material to form slits.

Abstract: Provided is a low-resistance connection body for a high-temperature superconducting wire, in which a high-temperature superconducting bulk body and a high-temperature superconducting wire including a high-temperature superconducting layer are connected to each other, wherein a melting point of the high-temperature superconducting layer is higher than a melting point of the high-temperature superconducting bulk body; the high-temperature superconducting layer and the high-temperature superconducting bulk body are in contact at a connection site of the high-temperature superconducting wire and the high-temperature superconducting bulk body; and a surface of the high-temperature superconducting bulk body that is in contact with the high-temperature superconducting layer is crystallized due to crystal growth. Two high-temperature superconducting wires can be connected, with low resistance, through connection of the two high-temperature superconducting wires to one high-temperature superconducting bulk.