| 摘要 |
PURPOSE:To obtain a magnetization device which conducts a magnetization of even such magnet material that has a large coercive force in a clearer pattern by locating a cushioning material made of superconductive substance between magnetization coils and between N and S electrodes in the magnetization coil with the magnetization space-side end of the cushioning material located at the same surface as that of the magnetization space-side end of the magnetization coil. CONSTITUTION:In this magnetization device, a cushioning material 3 is mounted between magnetization coils 1 and between N and S electrodes in the magnetization coil 1. If a magnetic field is generated after a current is allowed to flow in the magnetization coil 1 after the cushioning material 3, superconductive substance, is cooled down to the superconductivity- appearing temperature or below, a magnetic flux generated from the N electrode cannot enter the inside of the superconductive substance because of a Meissner effect of the superconductive substance and gets to the S electrode, going around the superconductive substance. Compared with a case in which there is no superconductive substance, a magnetic flux converges in the direction of the material to be magnetized. To the material to be magnetized 2, the convergence of magnetic flux means the growth of a magnetization field and a smooth alternation of the N and S electrodes. Consequently, a clear-pattern magnetization can be conducted even for such magnet material that has a large coercive force, such as an Sm-Co magnet and an Nd-Fe-b magnet. |
