| Автор | J H P Watson |
| Автор | I Younas |
| Дата выпуска | 1997-12-01 |
| dc.description | Inhomogeneous type II superconducting discs magnetized by an applied field will retain some magnetization when field is switched off so the superconducting disc will behave as a permanent magnet after flux creep has reduced to a low value.This paper examines the superconducting vortex structure within superconducting permanent-magnet high aspect-ratio discs which is consistent with the calculated magnetic field distribution.The discs, with radius R, have the axis along the z-direction and the mid-plane of the disc corresponds to z = 0. These discs with large aspect ratios in the remnant state have a region between radius and R where the magnetic field is reversed. Surrounding the line and z = 0 there is a region where which is in the Meissner state. Near the vortex lines are strongly curved. For radii vortex lines creep to larger values of r. For radii vortex lines creep to smaller values of r, meet at with vortex lines of opposite sign and form a continuous loop which decreases in size and is finally annihilated in the Meissner region. Flux creep induces lossless currents in the Meissner region. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The vortex structure and flux creep within superconducting permanent-magnet high aspect-ratio discs |
| Тип | paper |
| DOI | 10.1088/0953-2048/10/12/018 |
| Electronic ISSN | 1361-6668 |
| Print ISSN | 0953-2048 |
| Журнал | Superconductor Science and Technology |
| Том | 10 |
| Первая страница | 944 |
| Последняя страница | 946 |
| Аффилиация | J H P Watson; Department of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, England |
| Аффилиация | I Younas; Department of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, England |
| Выпуск | 12 |
