| 摘要 |
PURPOSE:To obtain an inexpensive battery for large power by providing a ring- or coil-like superconducting ceramic material and connecting the starting and ending points of the material with a superconducting ceramic material. CONSTITUTION:A superconducting ceramic material 3 is uniformly and closely stuck to the internal wall of a hollow metallic supporting body 2. The substance 3 is formed to a ring-or coil-like shape as a whole and its starting and ending points are connected to each other. The substance 3 has a molecular structure expressed by (A1-xBx)yCuOz (x=0.01-0.3, y=1.3-2.2, and z=2.0-4.5). The A represents one or a plurality of elements selected out of Y (yttrium), Ga (gallium), Zr (zirconium), Nb (niobium), Ge (germanium), Yb (ytterbium), or other Lanthanoids and the B represents Ra (radium) or Ba or one or a plurality of elements selected out of Sr (strontium), Ca, Mg, and Be. |
