The effect of stabilizer on the trapped field of stacks of superconducting tape magnetized by a pulsed field
The effect of stabilizer on the trapped field of stacks of superconducting tape magnetized by a pulsed field
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DOI：
10.1088/0953-2048/28/8/085009
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发表时间：
2015-08-01
影响因子：
3.6
通讯作者：
Glowacki, B. A.
中科院分区：
文献类型：
--
作者：
Page, A. G.;Patel, A.;Glowacki, B. A.
使用脉冲场磁化的高温超导带的堆叠提供了一种新型的使用超导体的永磁体。为了优化这种叠层中的俘获场，通过在15-77 K的温度范围内脉冲磁化15个带层的12 mm正方形叠层来研究稳定层的作用。该叠层由具有1-3 μ m银稳定剂的商用带或在1 μ m银的顶部上具有附加的20 μ m铜层的带组成。结果表明，稳定层厚度对俘获场和磁通量的影响不大，当银层厚度为1 μ m时，俘获场最大。还开发了一个有限元模型，考虑了第一次的金属和超导层的实际厚度的堆栈，调查的加热和热传递的效果时，一堆磁带被磁化。
Stacks of high temperature superconducting tape, magnetized using pulsed fields, provide a new type of permanent magnet using superconductors. To optimize the trapped field in such stacks, the role of stabilization layers was investigated by pulse magnetizing a 12 mm square stack of 15 tape layers over a temperature range of 15-77 K. The stacks consisted of commercial tape with a silver stabilizer of 1-3 mu m or tape with an additional 20 mu m layer of copper on top of 1 mu m of silver. It was found that the trapped field and flux are relatively insensitive to the stabilizer thickness, and 1 mu m of silver only, led to the highest trapped field. An FEM model was also developed for a stack that considered for the first time both the actual thickness of metallic and superconducting layers, to investigate the effect of heating and heat transfer when a stack of tapes is magnetized.