from the conferences organized by TANGER Ltd.
High-temperature superconducting tapes made from rare-earth element barium copper oxide have significant potential for use in high-field magnet applications, owing to their outstanding superconducting properties.However, they experience high magnetization losses when subjected to transient or alternating magnetic fields. To tackle this issue, it is crucial to reduce the width of tapes, which can be achieved through the striation of superconducting layer. During this process, the superconductor becomes exposed at the edges of the filaments to ambient, potentially leading to its degradation. In this study, we provided additional protection to these exposed areas in striated superconducting tapes by applying multilayer coatings using magnetron sputtering. Adhesion tests and measurements of electrical resistance were conducted on samples featuring 12 different coating systems, based on AlN. Their quality was evaluated using scanning electron microscopy. The selected system Ti / AlN was sputtered onto striated superconducting tapes, which underwent electrical measurements to comprehensively evaluate their performance.
Keywords: High-temperature superconducting tapes, AC losses, magnetron sputtering, AlN, thin films© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.