Abstract: An oxide superconducting wire includes a superconductor laminate including an oxide superconducting layer on at least one surface of a base material, and a plating layer which is included in a stabilizing layer of the superconductor laminate and formed by plating. A surface roughness Ra of the plating layer is 1.0 ?m or more and 2.0 ?m or less. An entire average crystal grain size of the plating layer is 0.86 ?m or more and 3.05 ?m or less.

Abstract: An oxide superconducting wire includes a superconductor laminate including an oxide superconducting layer on at least one surface of a base material, and a plating layer which is included in a stabilizing layer of the superconductor laminate and formed by plating. A surface roughness Ra of the plating layer is 1.0 ?m or more and 2.0 ?m or less. An entire average crystal grain size of the plating layer is 0.86 ?m or more and 3.05 ?m or less.

Abstract: An oxide superconducting wire connection structure includes: connection target wires, each of which includes an oxide superconducting wire including a superconducting layer on a substrate; and connection superconducting wires that connects the connection target wires. The connection superconducting wires are narrower in width than the connection target wires. Current characteristics of the connection superconducting wires are equal to or greater than current characteristics of the connection target wires.

Abstract: An oxide superconducting wire connection structure includes: a connection target wire including a first oxide superconducting wire that includes a first superconducting layer on a first substrate; and a connection superconducting wire including a second superconducting wire that includes a second superconducting layer on a second substrate. The connection target wire is connected to the connection superconducting wire. The first superconducting layer faces the second superconducting layer. In a portion of the connection superconducting wire at least facing the connection target wire, the second superconducting layer is divided into a plurality of portions in a width direction of the second substrate via non-orientation portions extending in a longitudinal direction of the second substrate. The non-orientation portions contain an oxide material that is same as the second superconducting layer.

Abstract: A superconducting wire includes: a superconducting laminate including a superconducting layer formed on a taped-shaped base material via an intermediate layer; and a stabilization layer that covers at least a portion of the superconducting laminate. A residual stress inside the stabilization layer is a tensile stress. A residual stress in a side surface portion of the stabilization layer that covers a side surface of the superconducting laminate is a tensile stress along a thickness direction of the superconducting laminate.

Abstract: An oxide superconducting wire includes an oxide superconducting laminate, the oxide superconducting laminate including: an intermediate body having a tape-shaped substrate, an intermediate layer formed on a main surface of the substrate, and an oxide superconducting layer formed on the intermediate layer; and a protective layer formed on the intermediate body. An average film thickness Tave of the protective layer is 0.1 ?m to 5 ?m. The ratio T?/Tave between a standard deviation T? and the average film thickness Tave of a film thickness of the protective layer is 0.4 or less.