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Preparation and characterization of melt textured NdBa2Cu3O7−δ bulk superconducting ceramics

Published online by Cambridge University Press:  15 February 1998

F. Tancret ,
I. Monot ,
P. Laffez ,
G. Van Tendeloo  and
G. Desgardin
F. Tancret
Affiliation:
Laboratoire CRISMAT, ISMRA, UMR 6508 Laboratoire LERMAT, UPRESSA 6004, 6 boulevard du Maréchal Juin, 14050 Caen Cedex, France
I. Monot*
Affiliation:
Laboratoire CRISMAT, ISMRA, UMR 6508
P. Laffez
Affiliation:
EMAT-RUCA, University of Antwerp, 171 Groenenborgerlaan, 2020 Antwerp, Belgium Laboratoire de physique de l'état condensé, Université du Maine, route de Laval, 72017 Le Mans, France
G. Van Tendeloo
Affiliation:
EMAT-RUCA, University of Antwerp, 171 Groenenborgerlaan, 2020 Antwerp, Belgium
G. Desgardin
Affiliation:
Laboratoire CRISMAT, ISMRA, UMR 6508
*
[email protected]
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Abstract

NdBaCuO superconductors have been textured by the oxygen controlled melt growth method. The addition of platinum or Nd422 does not refine the 422 phase, but the latter improves the microstructural quality. High purity precursors are necessary to achieve high Tc and Jc (up to 56 000 A/cm2). The flux pinning mechanisms are discussed in terms of oxygen deficiency, Nd-Ba substitution and softening of the vortex lattice.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 1 , Issue 2 , February 1998 , pp. 185 - 190
Copyright
© EDP Sciences, 1998

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