| 摘要 |
<p>Provided are a super-conducting wire material accomplishing a more satisfactory critical current density than in prior art, a production method therefor, and a super-conducting coil using the same. In order to achieve this objective, a super-conducting wire material (10) is provided with a plurality of super-conducting materials (4), each comprising a magnesium diboride layer (2) immobilized on a substrate (1), in such a way that: in a cross-section orthogonal to the current-conduction direction, a plurality of the magnesium diboride layers (2) are disposed along at least two directions comprising an immobilization direction of the magnesium diboride layer (2) with respect to the substrate (1), and a direction intersecting with the immobilization direction; and the cross-sectional area of the magnesium diboride layer (2) that constitutes the super-conducting material (4) is the same among each of the super-conducting materials (4) in the cross-section.</p> |
