CUED Publications database

Cost-effective isothermal top-seeded melt-growth of single-domain YBCO superconducting ceramics

Hlásek, T and Shi, Y and Durrell, JH and Dennis, AR and Namburi, DK and Plecháček, V and Rubešová, K and Cardwell, DA and Jankovský, O (2019) Cost-effective isothermal top-seeded melt-growth of single-domain YBCO superconducting ceramics. Solid State Sciences, 88. pp. 74-80. ISSN 1293-2558

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Abstract

In this work, a series of melt processed Y–Ba–Cu–O (YBCO) single-grains have been fabricated by the top-seeded melt growth (TSMG) technique. The melt processing is accepted widely as an effective way to grow bulk, single grain YBCO superconductors; however, this process is extremely complex and every step can affect the final properties of prepared bulk. Therefore, the impact of precursor powder preparation and growth conditions was studied for the first time. Cost-effective in-house made powder and commercially available precursor powders were employed and samples were grown employing top seeded melt growth, following the isothermal and the under-cooling growth techniques. The bulk microstructure including Y 2 BaCuO 5 (Y-211) particle size and distribution, superconducting properties (T c , J c ) and field trapping potential were investigated. The cost-effective high performance batch processing methodology was optimized. The fabricated YBCO bulks (diameter of 28 mm) exhibited average trapped field of 0.85 T at 77 K. Furthermore, other possibilities to achieve advancement in processing (RE)BCO bulks, are proposed.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Depositing User: Unnamed user with email sms67@cam.ac.uk
Date Deposited: 16 Dec 2018 20:04
Last Modified: 09 Sep 2021 02:26
DOI: 10.1016/j.solidstatesciences.2018.12.008