| 摘要 |
PURPOSE:To produce a superconducting magnet used as a practical magnet by applying a magnetic field to a solid structure such as a ring-shaped superconducting material from the outside. CONSTITUTION:An oxide ceramic superconducting material is practically converted into a magnet by applying a magnetic field to the material from the outside or a solid structure made of the oxide ceramic superconducting material is practically converted into a magnet by enclosing the structure with a nonmagnetic metal and applying a magnetic field to them from the outside. The oxide ceramic superconducting material is represented by a formula (A1-xBx)yCuzOw (where x is 0-1, y is 2.0-4.0, z is 1.0-4.0, w is 4.0-10.0, A is an element selected among Y, Gd, Yb, Eu, Tb, Dy, Ho, Er, Tm, Lu, Sc and other lanthanoids and B is an element selected among Ra, Ba, Sr, Ca, Mg and Be). |
