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首页> 外文期刊>Physica, C. Superconductivity and its applications >Magnetic field dependence of Y-123 coated conductor and Bi-2223 tape at 4.2 K
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Magnetic field dependence of Y-123 coated conductor and Bi-2223 tape at 4.2 K

机译：Y-123涂层导体和Bi-2223胶带在4.​​2 K下的磁场依赖性

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摘要

We evaluated the dependence of the critical current (I-c) and index number (n) of Y-123 and Bi-2223 tapes on the magnetic field up to 17 T at 4.2 K, in order to explore their possible application for high field magnet. We observed that the I-c and n values depended on the magnitude and direction of the magnetic field for the Y-123 tape, whereas in the case of Bi-2223 tape, the 1, depended on the magnetic field but the it did not significantly depend on the magnitude of the field. It is to be noted that, for the Y-123 tape, the I-c(B) characteristics showed highly anisotropic behavior: the I-c decreased nearly linearly in an increasing parallel field and approximately 45% of the I-c, (1.071 A/cm-width in a self-field) was retained at 17 T, whereas it decreased exponentially and only 14% of the I-c was retained in a perpendicular field at 10 T. In addition, no hysteric behavior was observed in the Y-123 tape when the fields were applied in increasing and decreasing paths, which is in remarkable contrast with the hysteretic behavior observed in the Bi-2223 tape. In the case of the Y-123 tape, the it decreased with increasing magnetic field and varied in the range of 16.8-49.7 in a parallel field ranging from 0 to 17 T and 5.2 to 45.2 in a perpendicular field ranging from 0 to 9 T. For the Bi-2223 tape, on the other hand, the n did not significantly depend on the magnitude of the field and the mean value and standard deviation were 24.5 and 5.3, respectively, in the range of 0-17 T. (c) 2005 Elsevier B.V. All rights reserved.
机译：我们评估了Y-123和Bi-2223磁带的临界电流（I-c）和折射率指数（n）对4.2 K时高达17 T的磁场的依赖性，以探讨它们在高磁场磁体中的可能应用。我们观察到Ic和n值取决于Y-123磁带的磁场强度和方向，而对于Bi-2223磁带，I和n值取决于磁场，但并不显着取决于磁场。在领域的规模上。值得注意的是，对于Y-123胶带，Ic（B）特性表现出高度的各向异性：在增加的平行磁场中，Ic几乎呈线性下降，约为Ic的45％（（1.071 A / cm宽）磁场在17 T时保持不变，而它呈指数下降，并且在10 T时在垂直场中仅保留14％的Ic。此外，在Y-123胶带中未观察到磁滞现象在增加和减少的路径中使用了这种材料，这与Bi-2223胶带中观察到的磁滞行为形成鲜明对比。在Y-123磁带的情况下，它随磁场的增加而减小，在0到17 T范围内的平行磁场中，它在16.8-49.7范围内变化;在0到9 T范围内垂直磁场，它在5.2至45.2范围内变化另一方面，对于Bi-2223磁带，n并不显着取决于磁场强度，在0-17 T范围内，平均值和标准偏差分别为24.5和5.3。 ）2005 Elsevier BV保留所有权利。

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