Critical Current Density in Gd1Ba2Cu3O7-δ Coated Conductor Under the Influence of Flux Creep
Critical Current Density in Gd1Ba2Cu3O7-δ Coated Conductor Under the Influence of Flux Creep
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蠕变磁通影响下Gd1Ba2Cu3O7-δ涂层导体的临界电流密度
DOI：
10.1016/j.phpro.2015.06.156
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
T. Izumi
中科院分区：
文献类型：
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作者：
Y. Onodera;T. Kiss;Suguru Gangi;K. Imamura;K. Higashikawa;M. Inoue;M. Yoshizumi;T. Izumi
我们通过磁化弛豫和输运四探针测量，研究了 Gd1Ba2Cu3O7-δ 涂层导体在 E 范围内的电场与电流密度 (E-J) 特性。我们成功地获得了 10-2 至 5×10−11V/m 之间的 E-J 特性，并在考虑磁通量蠕变和活化能分布的渗流转变模型框架内分析了结果。这使我们能够根据输运测量来分析描述 E-J 特性以及磁弛豫。实验结果也证实了与当时值模型的明显偏差。
We have investigated electric field vs. current density(E-J) characteristics of Gd1Ba2Cu3O7-δcoated conductor over a wide range ofEby deriving from magnetization relaxation and transport four-probe measurements. We succeeded in obtainingE-Jcharacteristics between10-2to 5×10−11V/m, and analyzed the results within a frame work of the percolation transition model taking into account flux creep with a distribution of activation energy. This allows us to describeE-Jcharacteristics as well as magnetic relaxation analytically based on the transport measurements. Clear deviation from then-value model has also been confirmed from the experimental results.