Patent ID: 11961631
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 9:
10. A superconducting wire comprising:
a first superconducting wire including a first superconducting layer;
a second superconducting wire including a second superconducting layer;
a third superconducting layer having a first surface and a second surface facing the first surface; and
a connection layer provided between the first superconducting layer and the third superconducting layer and between the second superconducting layer and the third superconducting layer, and the connection layer including a first substance containing a rare earth element (RE), barium (Ba), copper (Cu), and oxygen (O) and a second substance containing at least one metal element selected from the group consisting of silver (Ag), aluminum (Al), indium (In), copper (Cu), tin (Sn), and zinc (Zn),
wherein the first superconducting layer and the second superconducting layer are located on a side of the first surface of the third superconducting layer,
a first area ratio at a first interface between the first superconducting layer and the connection layer is 1% or more and 50% or less, the first area ratio is an area ratio of a first region per unit area, the first region is a region where the second substance and the first superconducting layer are in contact with each other, and
a second area ratio at a second interface between the second superconducting layer and the connection layer is 1% or more and 50% or less, the second area ratio is an area ratio of a second region per unit area, the second region is a region where the second substance and the second superconducting layer are in contact with each other, and
a third area ratio at a third interface between the third superconducting layer and the connection layer is 1% or more and 50% or less, the third area ratio is an area ratio of a third region per unit area, the third region is a region where the second substance and the third superconducting layer are in contact with each other.