Particle distribution in melt-processed Y-1.5 Ba2Cu3Ox superconductors with BaCeO3 addition

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To understand the effect of BaCeO3 on a Y2BaCuO5 (Y211) distribution, Y1.5Ba2Cu3Ox (Y1.5) superconductors with/without 1 wt.% BaCeO3 additions were prepared by a top-seeded melt-textured growth (TSMG) process. Two different BaCeO3 powders (as-synthesized (coarse powder) and an attrition-milled (fine powder)) were used and the size effect was compared with that obtained from a Y1.5 sample with no addition. A refinement of the Y211 particles was achieved for both the as-synthesized and attrition-milled BaCeO3 additions. The distribution of the Y211 particles was most uniform in the Y1.5 sample prepared with the attrition-milled BaCeO3 powder due to the reduced size of the Y211-free regions by the fine size BaCeO3 addition. The highest J(c) was achieved in the Y1.5 sample prepared with the attrition-milled BaCeO3 powder. The J(c) result agreed well with the microstructure variations by the addition of BaCeO3 powders. (C) 2009 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2009-08
Language
English
Article Type
Article; Proceedings Paper
Keywords

CRITICAL-CURRENT DENSITY; CU-O OXIDES; CEO2 ADDITION; MICROSTRUCTURE; YBA2CU3O7-DELTA; GROWTH; YBCO; MECHANISM; JC

Citation

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, v.469, pp.1239 - 1243

ISSN
0921-4534
URI
http://hdl.handle.net/10203/99240
Appears in Collection
MS-Journal Papers(저널논문)
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