We report the magnetization losses in an experimental multifilament coated conductor. A 4 mm wide and 10 cm long YBCO coated conductor was subdivided into eight 0.5 mm wide filaments by laser ablation and subjected to post-ablation treatment. As the result, the hysteresis loss was reduced, as expected, in proportion to the width of the filaments. However, the coupling loss was reduced dramatically, and became practically negligible, in the range of a sweep rate up to 20 T/s. This represents a drastic improvement on previous multifilament conductors in which often the coupling losses became equal to the hysteresis loss at a sweep rate as low as 3-4 T/s. These results demonstrate that there is an effective and practical way to suppress coupling losses in coated multifilament conductors.
Cite
@article{arxiv.cond-mat/0609480,
title = {AC-Tolerant Multifilament Coated Conductors},
author = {G. A. Levin and P. N. Barnes and N. Amemiya},
journal= {arXiv preprint arXiv:cond-mat/0609480},
year = {2015}
}
Comments
This paper is based on a talk given at 2006 Applied Superconductivity Conference in Seattle, WA (August 27-September 1, 2006). To be published in IEEE Trans. Appl. Superconductivity