A superconducting lead is presented for conducting electrical current to a superconducting device. the superconducting lead comprises first and second sections arranged one after the other along the lead, such that when the lead is brought to the superconducting device, the first and second sections are respectively proximal and distal sections with respect to the superconducting device, the proximal and distal sections being configured such that they differ from one another in at least one of heat conductance and working current.

An oxide superconducting wire includes two superconducting laminates that are superposed on each other in a thickness direction. Each superconducting laminate includes a tape-shaped substrate, an intermediate layer disposed on one face of the substrate, an oxide superconducting layer disposed on the intermediate layer, and a protective layer covering a surface of the oxide superconducting layer. The two superconducting laminates are integrated by a metal layer that is disposed at least on both lateral faces of the two superconducting laminates in a width direction, such that the two superconducting laminates form a non-fixed portion therebetween that is not fixed in a longitudinal direction of the superconducting laminates.

A superconducting material includes YBa.sub.2Cu.sub.3O.sub.7-? and a nano-structured, preferably nanowires, WO.sub.3 dopant in a range of from 0.01 to 3.0 wt. %, preferably 0.075 to 0.2 wt. %, based on total material weight. Methods of making the superconductor may preferably avoid solvents and pursue solid-state synthesis employing Y, Ba, and/or Cu oxides and/or carbonates.

An integrated superconductor device may include a substrate base and an intermediate layer disposed on the substrate base and comprising a preferred crystallographic orientation. The integrated superconductor device may further include an oriented superconductor layer disposed on the intermediate layer and a conductive strip disposed on a portion of the oriented superconductor layer. The conductive strip may define a superconductor region of the oriented superconductor layer thereunder, and an exposed region of the oriented superconductor layer adjacent the superconductor region.

A high-temperature superconducting filament and cable, and a method for manufacturing same. The substrate used to grow the superconducting layer is removed, and the exfoliated superconducting layer is coated with a protective layer, and then sliced into narrow strips. The strips are thereafter encapsulated with a conductive metal to provide a high-temperature superconducting filament. The filaments may be bundled together to provide a high-temperature superconducting cable.

The present invention relates to a superconductor and a method of manufacturing the same. The superconductor comprises: a substrate having a tape shape that extends in a first direction and having surfaces which are defined as a top surface, a bottom surface, and both side surfaces; a superconductive layer positioned on the top surface of the substrate; a first stabilizing layer disposed on the superconductive layer and containing a first metal; a protective layer disposed on the first stabilizing layer and containing a second metal which is different from the first metal; and an first alloy layer disposed between the stabilizing layer and the protective layer and containing the first and second metals.

Various embodiments may include a superconductor device for operation in an external alternating magnetic field comprising: two superconducting contact elements; a current-conducting section connecting the elements in a longitudinal direction corresponding to the direction of the flow of current; a superconductor layer applied to a substrate including a recess defining individual filaments. The individual filaments define current paths. At least two adjacent filaments are conductively connected in a crossing region formed on the substrate. The crossing region connects four current paths through omission of the recess. The device also includes a resistance barrier in a current paths of two adjacent filaments, which current paths are opposite with respect to the crossing and offset in the longitudinal direction and a transverse direction, perpendicular to the longitudinal direction, of a plane of the layer.

An integrated superconductor device may include a substrate base and an intermediate layer disposed on the substrate base and comprising a preferred crystallographic orientation. The integrated superconductor device may further include an oriented superconductor layer disposed on the intermediate layer and a conductive strip disposed on a portion of the oriented superconductor layer. The conductive strip may define a superconductor region of the oriented superconductor layer thereunder, and an exposed region of the oriented superconductor layer adjacent the superconductor region.

A superconducting wire according to the present disclosure includes: a base material; a superconductor layer formed on each of the respective surfaces of the base material; and a conductive protection layer formed on each of the surfaces of the respective superconductor layers. The thickness of each of the conductive protection layers is 5% or less of the skin depth when a high-frequency current flows through the superconducting wire. The material for forming the conductive protection layer may be, for example, silver.

An oxide superconducting wire of the invention includes a substrate, an intermediate layer which is laminated on a main surface of the substrate, has one or more layers having an orientation, and has one or more non-orientation regions extending in a longitudinal direction of the wire, and an oxide superconducting layer which is laminated on the intermediate layer, has a crystal orientation controlled by the intermediate layer, and has non-orientation regions located on the non-orientation regions in the intermediate layer and is formed into multiple filaments.