Copyright (1998) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
The following article appeared in Appl. Phys. Lett. 73, 117 (1998) and may be found at http://link.aip.org/link/?APPLAB/73/117/1.
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Abstract :
[en] Artificial bulk "zero-angle" boundaries parallel to the c axis have been engineered between large melt-processed YBa2CU3O7-delta (YBCO) grains and observed to carry a transport supercurrent at fields up to at least 5 T at 77 K. The temperature and angular dependencies of the boundary resistance have exactly the same form as those of the grains, which is evidence that the grains are intimately coupled. The limiting mechanism for current transfer across these boundaries is, therefore, not a simple weak link or Josephson effect. This joining technique is extremely promising for production of macroscopic engineering artifacts. (C) 1998 American Institute of Physics.
Research Center/Unit :
SUPRATECS - Services Universitaires pour la Recherche et les Applications Technologiques de Matériaux Électro-Céramiques, Composites, Supraconducteurs - ULiège
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