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Infiltration and Top Seed Growth‐Textured YBCO Bulks With Multiple Holes
Author(s) -
Noudem Jacques G.,
Meslin Sophie,
Horvath Daniel,
Harnois Christelle,
Chateigner Daniel,
Ouladdiaf Bachir,
Eve Sophie,
Gomina Mousta,
Chaud Xavier,
Murakami Masato
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01841.x
Subject(s) - materials science , homogeneity (statistics) , superconductivity , ceramic , annealing (glass) , composite material , shrinkage , infiltration (hvac) , flux pinning , high temperature superconductivity , condensed matter physics , statistics , physics , mathematics
The recently reported hole‐patterned YBa 2 Cu 3 O y (Y123) bulks with improved superconducting properties are highly interesting from material quality and application variety points of view. It is well known that the core of plain bulk superconductors needs to be fully oxygenated and some defects like cracks, pores, and voids must be suppressed in order that the material can trap a high magnetic field or carry a high current density. To minimize the above defects, we have used a combination of standard superconducting ceramic processing and an infiltration technique to prepare regularly perforated YBa 2 Cu 3 O y (Y123) bulk superconductors. This process leads to negligible shrinkage upon annealing and a uniform distribution of Y211 inclusions. Texture was evidenced by neutron pole figure measurements. Flux mapping was used to verify the superconducting homogeneity of the samples and to investigate the field‐trapping ability. In addition, the textured drilled samples were reinforced using resin or metal impregnation and the influence of the different processing steps on the hardness of the materials has been investigated.