标题： 场和温度对商用 REBCO 涂层导体临界电流密度的标度效应 显示英文标题

标题： Field and temperature scaling of the critical current density in commercial REBCO coated conductors

摘要： 描述涂层导体（CCs）电磁行为的尺度关系大大简化了基于REBCO的设备设计。 REBCO CCs的性能受到制造工艺、导体结构和材料的强烈影响，这些参数因制造商而异。 在本研究中，我们检查了来自六家不同制造商的涂层导体的临界表面电流密度Jc(T,B,$\theta$)：美国Superconductor Co.（美国），Bruker HTS GmbH（德国），Fujikura Ltd.（日本），SuNAM Co. Ltd.（韩国），SuperOx ZAO（俄罗斯）和SuperPower Inc.（美国）。 在4.2 K至77 K的温度范围内以及高达19 T的磁场中进行了电输运和磁测量。实验在三个不同的方向进行，相对于REBCO层的晶体学c轴，$\theta$ = 0$\deg$，45$\deg$和90$\deg$，以探测Jc的角各向异性。 尽管CCs的性能存在很大差异，但我们在这里表明，使用仅基于三个参数的尺度关系可以在广泛范围内再现给定角度下Jc的场和温度依赖性。 此外，我们提出并验证了一种新的方法，结合磁测量和输运测量以最小的实验努力确定尺度参数。 显示英文摘要

摘要： Scaling relations describing the electromagnetic behaviour of coated conductors (CCs) greatly simplify the design of REBCO-based devices. The performance of REBCO CCs is strongly influenced by fabrication route, conductor architecture and materials, and these parameters vary from one manufacturer to the others. In the present work we have examined the critical surface for the current density, Jc(T,B,$\theta$), of coated conductors from six different manufacturers: American Superconductor Co. (US), Bruker HTS GmbH (Germany), Fujikura Ltd. (Japan), SuNAM Co. Ltd. (Korea), SuperOx ZAO (Russia) and SuperPower Inc. (US). Electrical transport and magnetic measurements were performed at temperatures between 4.2 K and 77 K and in magnetic field up to 19 T. Experiments were conducted at three different orientations of the field with respect to the crystallographic c-axis of the REBCO layer, $\theta$ = 0$\deg$, 45$\deg$ and 90$\deg$, in order to probe the angular anisotropy of Jc. In spite of the large variability of CCs performance, we show here that field and temperature dependences of Jc at a given angle can be reproduced over wide ranges using a scaling relation based only on three parameters. Furthermore, we present and validate a new approach combining magnetic and transport measurements for the determination of the scaling parameters with minimal experimental effort.