AC Current Driven Flux Dynamics in YBCO Coated Conductors
AC Current Driven Flux Dynamics in YBCO Coated Conductors
复制标题
YBCO 涂层导体中交流电流驱动的磁通动力学
DOI：
10.1557/proc-1001-m11-02
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
P. Barnes
中科院分区：
文献类型：
--
作者：
A. Lucarelli;Ran Yang;G. Luepke;G. Levin;T. Haugan;P. Barnes
利用时间分辨磁光成像技术研究了YBa 2Cu 3 O 7-δ涂层导体在交流电流下的磁光特性。在超导样品中的磁通密度分布的演变被成像在所施加的AC电流的相位的小步骤。由于涂层导体的晶粒结构，相演化过程中的磁通渗透是不均匀的。图像的定量分析显示了晶界网络如何影响磁通和电流密度演化的整体行为。
We present a time-resolved magneto-optical imaging study of YBa 2 Cu 3 O 7-δ coated conductors in alternating current regime. The evolution of the magnetic flux density distribution in the superconducting samples is imaged at small steps of the phase of the applied AC current. The flux penetration during the phase evolution is inhomogeneous due to the grain structure of the coated conductor. A quantitative analysis of the images show how grain boundary network affects the overall behavior of the flux and current density evolution.