Suppression of Magnetic Relaxation in a High-Temperature Superconductor Placed near a Ferromagnet

被引：3
|
作者：
Smolyak, B. M. [1 ]
Ermakov, G. V. [1 ]
机构：
[1] Russian Acad Sci, Inst Thermal Phys, Ural Branch, Ekaterinburg 620219, Russia
来源：
TECHNICAL PHYSICS LETTERS | 2010年 / 36卷 / 05期
关键词：
Vortex; Lorentz Force; Technical Physic Letter; Magnetic Relaxation; Levitation Force;
D O I：
10.1134/S1063785010050214
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The phenomenon of the suppression of magnetic relaxation in a high-temperature superconductor (HTSC) with trapped magnetic flux has been observed when the superconducting sample approached a ferromagnet. It is suggested that the ferromagnet is magnetized in the magnetic field of the sample and, in turn, induces currents in the superconductor, which circulate in a direction opposite to that of the trapped flux current. As a result, the magnetic structure becomes stable with respect to the magnetic flux creep because oppositely directed Lorentz forces can act upon different regions of vortices.
引用
收藏
页码：461 / 463
页数：3
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