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Effect of Pt and CeO<inf>2</inf> on growth of Y-123/nano-Y<inf>2</inf>O<inf>3</inf> single grain superconductors

Zhang, ZW and Shi, Y and Zhai, W and Dennis, AR and Cardwell, DA (2017) Effect of Pt and CeO<inf>2</inf> on growth of Y-123/nano-Y<inf>2</inf>O<inf>3</inf> single grain superconductors. IEEE Transactions on Applied Superconductivity, 27. ISSN 1051-8223

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Abstract

© 2002-2011 IEEE. The top seeded melt growth (TSMG) process is used widely to grow single grain, bulk superconductors for high field engineering applications. Within the TSMG process, the flux pinning ability of a single-grain bulk superconductor can be improved effectively by reducing the size of starting precursor powders prior to melt processing. This paper investigates the preparation of Y-123/nano-Y 2 O 3 single-grain samples based on TSMG process. A large number of microcracks and significant inhomogeneity were found in samples containing Pt and CeO 2 additives, respectfully. This reduces the performance of samples made from nano Y 2 O 3 starring powders. A pretreatment of the starting powders was developed to decrease microcracks and improve the homogeneity of Y-123/nano-Y 2 O 3 single grain samples. The influence of Pt and CeO 2 doping on the superconducting properties of the fully processed single grain were also investigated in detail. The Y-123/nano-Y 2 O 3 based samples exhibit features that are rarely seen in conventional YBCO single grain, bulk superconductors.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:11
Last Modified: 07 Sep 2017 01:44
DOI: