| 摘要 |
PURPOSE: To change the magnitude of a magnetic field freely by stopping a permanent magnet with a pin within a high temperature superconductor for power generation after cooling the section constituted of the high temperature superconductor of an exciting mechanism thereby putting it in a superconductive condition. CONSTITUTION: For a magnetizer, the section made of a high temperature superconductor is cooled under a critical temperature into a superconductor, and a permanent magnet 44 for generation of a magnetic field is shifted by a rotating mechanism 47, whereupon a normal conductive region 45 is generated and a magnetic flux passes, at the point of time when the permanent magnet 44 for generation of a magnetic field comes under the high temperature superconductor thin film 41. And, the normal conductive region 45 shifts on the high temperature superconductor thin film 41, according to the movement of the permanent magnet 4 for generation of a magnetic field, and at the point of time when it passes under it, a magnetic flux is taken in a superconductive closed circuit, and as the filling of magnetic fluxes is repeated, the permanent current increases, and when the magnitude of the magnetic field get over the lower critical magnetic field of the high temperature superconductor 46 for power generation, the permanent magnet 44 is fixed within the high temperature superconductor 46 for power generation, and there magnetization can be caused. As a result, the magnitude of the magnetic field to be applied can be changed freely. |
