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Grain Boundary Weak Links in High-TC Superconductors
Published online by Cambridge University Press: 26 February 2011
Abstract
The transport critical current density (Jc) for high-Tc thin films, bicrystals, and bulk ceramics is shown to be determined by magnetic field penetration into the grain boundaries. The gross grain orientations may not in all cases be an important factor in determining this penetration. The parameter (λG/λj)2can characterize the strength of the grain boundary coupling, which depends mainly on the crystal coherence and connectivity at the boundary area.
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- Copyright © Materials Research Society 1992