Article (Scientific journals)
From RE-211 to RE-123. How to control the final microstructure of superconducting single-domains
Cloots, Rudi; Koutzarova, T.; Mathieu, J.-P. et al.
2005In Superconductor Science and Technology, 18 (3), p. 9-R23
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Keywords :
Defects; Dissolution; Grain boundaries; Growth (materials); Interfaces (materials); Magnetic field effects; Microstructure; Nucleation; Single crystals; Yttrium barium copper oxides; Microstructural defects; Parasite nucleation; Single-domain bulk superconductors; Trapping theory; Superconducting materials
Abstract :
[en] This paper reviews the usual techniques for producing YBCO-type single-domains and the microstructure of the as-obtained samples. The problems of seed dissolution and parasite nucleations are discussed in detail. The formation of microstructural defects, such as pores and cracks, is examined. An important part of this review is devoted to the study of the influence of RE-211 particles (RE2BaCuO5 where RE denotes Y, Yb, Nd, Sm, Dy, Gd, Eu or a mixture of them. Generally Nd4Ba2Cu 2O10 is preferred to Nd2BaCuO5) for the microstructure and properties of RE-Ba-Cu-O single-domains. Pushing/trapping theory is described in order to explain the spatial distribution of RE-211 particles in the RE-123 ((RE)Ba2Cu3O7-δ) monoliths. The formation of RE-211-free regions is discussed. Different ways to limit the RE-211 coarsening are reviewed. Microstructural defects in the RE-123 matrix caused by the RE-211 particles are presented. It is also shown that RE-211 particles play a significant role in the mechanical properties of single-domain samples. We finish this review by discussing the infiltration and growth process as a good technique to control the microstructure. © 2005 IOP Publishing Ltd.
Disciplines :
Physics
Author, co-author :
Cloots, Rudi ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Koutzarova, T.;  SUPRATECS, Chemistry Institute B6, University of Liège, Sart Tilman, B-4000 Liège, Belgium
Mathieu, J.-P.;  SUPRATECS, Chemistry Institute B6, University of Liège, Sart Tilman, B-4000 Liège, Belgium
Ausloos, Marcel ;  Université de Liège - ULiège > Département de physique > Département de physique
Language :
English
Title :
From RE-211 to RE-123. How to control the final microstructure of superconducting single-domains
Publication date :
2005
Journal title :
Superconductor Science and Technology
ISSN :
0953-2048
eISSN :
1361-6668
Publisher :
Institute of Physics, Bristol, United Kingdom
Volume :
18
Issue :
3
Pages :
R9-R23
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 January 2013

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