Infiltration and Top Seed Growth-Textured YBCO Bulks With Multiple Holes |
| |
Authors: | Jacques G. Noudem Sophie Meslin Daniel Horvath Christelle Harnois Daniel Chateigner Bachir Ouladdiaf Sophie Eve Mousta Gomina Xavier Chaud Masato Murakami |
| |
Affiliation: | CRISMAT, CNRS/UMR 6508, ENSICAEN and Universitéde Caen Basse-Normandie, 14050 CAEN, Cedex, France; Supertech Laboratory, Department of Power Engineering, Budapest University of Technology and Economics, Budapest, Hungary; CRETA/CNRS, 38042 Grenoble, Cedex 09, France; Shibaura Institute of Technology, Tokyo 135-8548, Japan; Institut Laue-Langevin, BP 156-38042 Grenoble, Cedex 09, France |
| |
Abstract: | The recently reported hole-patterned YBa2Cu3O 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 YBa2Cu3O 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. |
| |
Keywords: | |
|
|