Interaction of magnetic field and magnetic history in high-temperature superconductors

被引：32

作者：

Grilli, Francesco ^{[1
]}

Ashworth, Stephen P. ^{[1
]}

Civale, Leonardo ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 102卷 / 07期

关键词：

D O I：

10.1063/1.2785959

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Yttrium barium copper oxide (YBCO) coated conductors are now the most promising high-temperature superconducting tapes in terms of current capacity and price. One form of these conductors utilizes YBCO films on Ni-W metallic tapes and is being considered for a number of power engineering applications. In these applications, the conductor will carry an ac current, leading to energy losses, which are the focus of significant technical and experimental efforts. Our measurements of the ac losses of YBCO/Ni-W conductors carrying ac currents in applied dc magnetic fields have revealed a complex interaction between the magnetic materials present, the geometry of the conductor, the ac and dc magnetic fields, and the electromagnetic "history" of the sample. The investigation of this interaction is the main subject of this paper. (C) 2007 American Institute of Physics.

引用

页数：6

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