Ultra-High Performance, High-Temperature Superconducting Wires via Cost-effective, Scalable, Co-evaporation Process
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- Title
- Ultra-High Performance, High-Temperature Superconducting Wires via Cost-effective, Scalable, Co-evaporation Process
- Authors
- Kim, Ho-Sup; Oh, Sang-Soo; Ha, Hong-Soo; Youm, Dojun; Moon, Seung-Hyun; Kim, Jung Ho; Dou, Shi Xue; HEO, YOON UK; Wee, Sung-Hun; Goyal, Amit
- Date Issued
- 2014-04
- Publisher
- Nature Publishing Group
- Abstract
- Long-length, high-temperature superconducting (HTS) wires capable of carrying high critical current, I-c, are required for a wide range of applications. Here, we report extremely high performance HTS wires based on 5 mu m thick SmBa2Cu3O7-delta (SmBCO) single layer films on textured metallic templates. SmBCO layer wires over 20 meters long were deposited by a cost-effective, scalable co-evaporation process using a batch-type drum in a dual chamber. All deposition parameters influencing the composition, phase, and texture of the films were optimized via a unique combinatorial method that is broadly applicable for co-evaporation of other promising complex materials containing several cations. Thick SmBCO layers deposited under optimized conditions exhibit excellent cube-on-cube epitaxy. Such excellent structural epitaxy over the entire thickness results in exceptionally high I-c performance, with average I-c over 1,000 A/cm-width for the entire 22 meter long wire and maximum I-c over 1,500 A/cm-width for a short 12 cm long tape. The I-c values reported in this work are the highest values ever reported from any lengths of cuprate-based HTS wire or conductor.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/106928
- DOI
- 10.1038/srep04744
- ISSN
- 2045-2322
- Article Type
- Article
- Citation
- Scientific Reports, vol. 4, no. 1, 2014-04
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