1. AC Losses of Copper Stabilized Multifilament YBCO Coated Conductors
- Author
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Levin, G. A., Murphy, J., Haugan, T. J., Šouc, J., Kováč, J., and Kováč, P.
- Subjects
Condensed Matter - Superconductivity ,Condensed Matter - Materials Science - Abstract
We report the data on magnetization losses and critical current of multifilament copper stabilized coated conductors. Eight centimeters long samples of copper stabilized YBa2Cu3O7-x (YBCO) coated conductors manufactured commercially were subdivided into superconducting filaments by near-IR laser micromachining. The width of the superconducting stripes was varied from 0.2 mm to 0.04 mm. Some of the samples were striated leaving superconducting bridges for current sharing between the filaments. The AC losses were measured at different sweep rates of the magnetic field up to 14 T/s. We will present the results for the hysteresis and coupling losses and discuss the means to reduce the coupling loss by changing the processing parameters of micromachining and by post-ablation treatment., Comment: In the first version of this preprint the value of copper resistivity used for calculating eddy current losses was ten times lower than the actual value. Please don't ask how that could have happened. Correspondingly, the conclusions described in the first column on page 4 were wrong and are now corrected
- Published
- 2012
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