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Title: Transport critical currents and grain boundary coupling in high-{Tc} superconductors

Technical Report ·
DOI:https://doi.org/10.2172/10144496· OSTI ID:10144496

We propose that the transport critical current density for high-{Tc} thin films, bicrystals and bulk ceramics is determined by the magnetic field penetration into the grain boundaries; the grain orientation may not be an important factor. The parameter ({lambda}{sub L}/{lambda}{sub J}){sup 2} can characterize the strength of the grain boundary coupling, which depends mainly on the crystal coherence and connectivity at the boundary area, but not on the crystal orientation.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
10144496
Report Number(s):
ANL/MSD/PP-73888; ON: DE94010449
Resource Relation:
Other Information: PBD: Jul 1991
Country of Publication:
United States
Language:
English